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Radiant|Lab Grown|IGI

1.70ct D FL Radiant Lab Grown Diamond

ID • D/FL • IGI LG818659742

Shape and cutting style on the report: Cut cornered rectangular modified brilliant

Certificate IGI LG818659742

Diamond specifications and retailer prices

From €531 EUR
$593 USD
As of October 30, 2026
Save €3,099 EUR (85%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: €3,630 EUR at Rare Carat · As of October 28, 2026
View at Rare Carat

About this 1.7ct lab-grown radiant diamond

This 1.7ct lab-grown radiant sits in the one-and-a-half to two carat band, graded D colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG818659742 or 818659742. Listed at 22 retailers as of October 28, 2026, with prices from €531 to €3,630, a €3,099 spread on the same certified stone. Rare Carat lists it at €3,630. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.70
Carat
D
Colour
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle42.8°
Pavilion angle36.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG818659742
Dimensions8.20 × 6.12 × 3.97 mm
L/W Ratio1.34
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II
Top View
8.20 mm6.12 mm1.70 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG818659742
Side View
Table 66.0%Crown 42.8°Girdle: MED-STKPavilion 36.3°Culet: NoneDepth 64.9%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: €3,630 EUR|Low: €531 EUR|High: €4,869 EUR|Avg: €1,687 EUR
Rare Carat
Retailer 2
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Retailer 21
October 31, 2026
Retailer 14€531 EUR
Retailer 2€594 EUR
Retailer 21€594 EUR
Retailer 12€658 EUR
Retailer 17€698 EUR
Retailer 20€774 EUR
Retailer 5€1,010 EUR
Retailer 13€1,020 EUR
Retailer 4€1,073 EUR
Retailer 19€1,130 EUR
Retailer 7€1,207 EUR
Retailer 6€1,484 EUR
Retailer 10€1,729 EUR
Retailer 8€1,910 EUR
Retailer 9€2,128 EUR
Retailer 15€2,156 EUR
Retailer 11€2,238 EUR
Retailer 18€2,870 EUR
Retailer 3€3,137 EUR
Retailer 16€3,554 EUR
Rare Carat€3,630 EUR

26 data points across 21 retailers

22 retailers€531 EUR to €3,630 EUR

A
Cheapest Retailer
-
€531 EUR
$593 USD
A
Retailer 2
-
€594 EUR
$664 USD
View
Final sale: no returns
A
Retailer 3
-
€594 EUR
$664 USD
View
Retailer 4
-
€656 EUR
$733 USD
View
Price last confirmed 14 days ago
A
Retailer 5
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€658 EUR
$735 USD
View
A
Retailer 6
-
€698 EUR
£614 GBP
View
A
Retailer 7
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€774 EUR
$865 USD
View
A
Retailer 8
-
€1,010 EUR
$1,128 USD
View
A
Retailer 9
-
€1,020 EUR
£897 GBP
View
Retailer 10
-
€1,073 EUR
View
Price last confirmed 8 days ago
B+
Retailer 11
-
€1,130 EUR
ZAR 20,400 ZAR
View
B+
Retailer 12
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€1,207 EUR
$1,348 USD
View
B+
Retailer 13
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€1,484 EUR
$1,658 USD
View
B+
Retailer 14
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€1,729 EUR
$1,932 USD
View
B+
Retailer 15
-
€1,910 EUR
£1,680 GBP
View
B+
Retailer 16
-
€2,128 EUR
$2,377 USD
View
B+
Retailer 17
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€2,156 EUR
$2,409 USD
View
B+
Retailer 18
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€2,238 EUR
SGD 3,379 SGD
View
B
Retailer 19
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€2,870 EUR
£2,525 GBP
View
B
Retailer 20
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€3,137 EUR
$3,505 USD
View
B
Retailer 21
-
€3,554 EUR
$3,970 USD
View
Most Expensive
B
Rare Carat
VL-144984 · Oct 28
€3,630 EUR
$4,055 USD
View
21 more retailers have this diamond
Prices start from €531 EURSave up to €3,099 EUR

Carat Hunter is not affiliated with, endorsed by, or sponsored by any retailer listed. Retailer information is from publicly available sources and may not be current. Verify details directly with the retailer before purchasing. Return terms as we hold them. Check the retailer's own returns page before you buy.

A
1.70ct Radiant
€531 EUR