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Round|Lab Grown|IGI

1.72ct D SI1 Round Lab Grown Diamond

ID • D/SI1 • IGI LG455032750

Shape and cutting style on the report: Round brilliant

Certificate IGI LG455032750

Diamond specifications and retailer prices

From €235 EUR
$263 USD
As of October 30, 2026
Save €821 EUR (78%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: €1,056 EUR at Brilliant Earth · As of October 29, 2026
View at Brilliant Earth

About this 1.72ct lab-grown round diamond

This 1.72ct lab-grown round sits in the one-and-a-half to two carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG455032750 or 455032750. Listed at 15 retailers as of October 29, 2026, with prices from €235 to €1,056, a €821 spread on the same certified stone. Brilliant Earth lists it at €1,056. 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

1.72
Carat
D
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.6°
Pavilion angle41.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG455032750
Dimensions7.66 × 7.62 × 4.76 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory grown diamond was created by high pressure high temperature process (HPHT).
Top View
7.66 mm7.62 mm1.72 ctD / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG455032750
Side View
Table 59.5%Crown 35.6°GirdlePavilion 41.3°Culet: NoneDepth 62.4%

Caratlytics Score

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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: €1,056 EUR|Low: €235 EUR|High: €1,178 EUR|Avg: €554 EUR
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
October 31, 2026
Retailer 11€235 EUR
Retailer 4€291 EUR
Retailer 12€354 EUR
Retailer 7€410 EUR
Retailer 3€439 EUR
Retailer 2€472 EUR
Retailer 5€493 EUR
Retailer 9€499 EUR
Retailer 8€688 EUR
Retailer 10€888 EUR
Retailer 6€1,050 EUR
Brilliant Earth€1,056 EUR

42 data points across 12 retailers

15 retailers€235 EUR to €1,056 EUR

Retailer 1
-
€235 EUR
$262 USD
Price last confirmed 39 days ago
A
Retailer 2
-
€235 EUR
$263 USD
View
Final sale: no returns
Retailer 3
-
€272 EUR
$304 USD
View
Price last confirmed 39 days ago
Retailer 4
-
€286 EUR
$320 USD
View
Price last confirmed 36 days ago
B+
Retailer 5
-
€354 EUR
$395 USD
View
Retailer 6
-
€410 EUR
£361 GBP
View
Price last confirmed 15 days ago
A
Retailer 7
-
€472 EUR
View
A
Retailer 8
-
€493 EUR
£434 GBP
View
A
Retailer 9
-
€499 EUR
$557 USD
View
B+
Retailer 10
-
€688 EUR
$769 USD
View
Retailer 11
-
€815 EUR
$910 USD
View
Price last confirmed 40 days ago
B
Retailer 12
-
€888 EUR
$992 USD
View
Retailer 13
-
€934 EUR
$1,043 USD
View
Price last confirmed 41 days ago
B
Retailer 14
-
€1,050 EUR
£924 GBP
View
Most Expensive
B
Brilliant Earth
14242415A · Oct 29
€1,056 EUR
$1,180 USD
View
14 more retailers have this diamond
Prices start from €235 EURSave up to €821 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
1.72ct Round
€235 EUR