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Round|Lab Grown|IGI

2.55ct G SI1 Round Lab Grown Diamond

ID • G/SI1 • IGI LG783653666

Shape and cutting style on the report: Round brilliant

Certificate IGI LG783653666

Diamond specifications and retailer prices

From €301 EUR
$336 USD
As of November 1, 2026
Save €1,391 EUR (82%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: €1,692 EUR at Brilliant Earth · As of November 1, 2026
View at Brilliant Earth

About this 2.55ct lab-grown round diamond

This 2.55ct lab-grown round sits in the two to three carat band, graded G colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG783653666 or 783653666. Listed at 16 retailers as of November 1, 2026, with prices from €301 to €1,692, a €1,391 spread on the same certified stone. Brilliant Earth lists it at €1,692. 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

2.55
Carat
G
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.2°
Pavilion angle40.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG783653666
Dimensions8.79 × 8.72 × 5.33 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
8.79 mm8.72 mm2.55 ctG / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG783653666
Side View
Table 58.0%Crown 35.2°Girdle: MED-STKPavilion 40.1°Culet: NoneDepth 60.9%

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: Nov 1
Current: €1,692 EUR|Low: €289 EUR|High: €1,745 EUR|Avg: €762 EUR|-3.1%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
November 2, 2026
Retailer 11€301 EUR
Retailer 4€337 EUR
Retailer 3€349 EUR
Retailer 6€373 EUR
Retailer 12€373 EUR
Retailer 8€510 EUR
Retailer 13€602 EUR
Retailer 2€667 EUR
Retailer 14€706 EUR
Retailer 10€1,094 EUR
Retailer 5€1,199 EUR
Retailer 9€1,293 EUR
Retailer 7€1,503 EUR
Brilliant Earth€1,692 EUR

42 data points across 14 retailers

16 retailers€301 EUR to €1,692 EUR

A
Cheapest Retailer
-
€301 EUR
$336 USD
A
Retailer 2
-
€337 EUR
$376 USD
View
Final sale: no returns
A
Retailer 3
-
€349 EUR
$390 USD
View
A
Retailer 4
-
€373 EUR
$417 USD
View
Retailer 5
-
€373 EUR
$417 USD
View
Price last confirmed 8 days ago
A
Retailer 6
-
€510 EUR
$570 USD
View
B+
Retailer 7
-
€602 EUR
$673 USD
View
A
Retailer 8
-
€667 EUR
£586 GBP
View
B+
Retailer 9
-
€706 EUR
$789 USD
View
B+
Retailer 10
-
€762 EUR
$851 USD
View
B
Retailer 11
-
€1,094 EUR
$1,222 USD
View
B
Retailer 12
-
€1,199 EUR
$1,339 USD
View
B
Retailer 13
-
€1,238 EUR
$1,383 USD
View
B
Retailer 14
-
€1,293 EUR
$1,445 USD
View
B
Retailer 15
-
€1,503 EUR
£1,322 GBP
View
Most Expensive
B
Brilliant Earth
18159735A · Nov 1
€1,692 EUR
$1,890 USD
View
15 more retailers have this diamond
Prices start from €301 EURSave up to €1,391 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
2.55ct Round
€301 EUR