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Round|Lab Grown|IGI

1.70ct J SI2 Round Lab Grown Diamond

EX • J/SI2 • IGI LG451057285

Shape and cutting style on the report: Round brilliant

Certificate IGI LG451057285

Diamond specifications and retailer prices

From €841 EUR
$940 USD
As of October 31, 2026
Save €3,130 EUR (79%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: €3,972 EUR at MOH London · As of October 29, 2026
View at MOH London

About this 1.7ct lab-grown round diamond

This 1.7ct lab-grown round sits in the one-and-a-half to two carat band, graded J colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG451057285 or 451057285. Listed at 10 retailers as of October 29, 2026, with prices from €841 to €3,972, a €3,130 spread on the same certified stone. MOH London lists it at €3,972. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

1.70
Carat
J
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.3°
Pavilion angle40.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG451057285
Dimensions7.73 × 7.77 × 4.58 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
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Top View
7.73 mm7.77 mm1.70 ctJ / SI2
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG451057285
Side View
Table 59.5%Crown 33.3°Girdle: MED-STKPavilion 40.2°Culet: NoneDepth 59.0%

Caratlytics Score

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

Price History

Last verified: Oct 31
Current: €3,972 EUR|Low: €841 EUR|High: €3,998 EUR|Avg: €1,853 EUR|-0.5%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
October 30, 2026
Retailer 2€841 EUR
Retailer 4€1,060 EUR
Retailer 7€1,153 EUR
Retailer 9€1,187 EUR
Retailer 5€1,230 EUR
Retailer 11€1,750 EUR
Retailer 6€1,950 EUR
Retailer 8€2,305 EUR
Retailer 10€2,423 EUR
Retailer 3€2,750 EUR
MOH London€3,972 EUR

15 data points across 11 retailers

10 retailers€841 EUR to €3,972 EUR

A
Cheapest Retailer
-
€841 EUR
$940 USD
B+
Retailer 2
-
€1,060 EUR
$1,184 USD
View
B+
Retailer 3
-
€1,153 EUR
$1,288 USD
View
B+
Retailer 4
-
€1,187 EUR
$1,326 USD
View
Final sale: no returns
B+
Retailer 5
-
€1,230 EUR
$1,374 USD
View
Retailer 6
-
€1,230 EUR
$1,374 USD
View
Price last confirmed 19 days ago
B
Retailer 7
-
€1,950 EUR
$2,179 USD
View
B
Retailer 8
-
€2,305 EUR
$2,575 USD
View
B
Retailer 9
-
€2,423 EUR
$2,707 USD
View
Most Expensive
B
MOH London
LG451057285 · Oct 29
€3,972 EUR
£3,494 GBP
View
9 more retailers have this diamond
Prices start from €841 EURSave up to €3,130 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 Round
€841 EUR