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Round|Lab Grown|IGI

2.51ct G SI1 Round Lab Grown Diamond

GD • G/SI1 • IGI LG734518739

Shape and cutting style on the report: Round brilliant

Certificate IGI LG734518739

Diamond specifications and retailer prices

From €273 EUR
$305 USD
As of November 1, 2026
Save €1,082 EUR (80%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: €1,355 EUR at MOH London · As of November 1, 2026
View at MOH London

About this 2.51ct lab-grown round diamond

This 2.51ct lab-grown round sits in the two to three carat band, graded G colour (near-colourless) and SI1 clarity (slightly-included), with a standard cut grade and certified by IGI LG734518739 or 734518739. Listed at 13 retailers as of November 1, 2026, with prices from €273 to €1,355, a €1,082 spread on the same certified stone. MOH London lists it at €1,355. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

2.51
Carat
G
Color
SI1
Clarity
Good
Cut

Specifications

CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle30.9°
Pavilion angle40°
OriginLab Grown
Grading LabIGI
CertificateIGI LG734518739
Dimensions8.99 × 8.95 × 5.01 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
8.99 mm8.95 mm2.51 ctG / SI1
OriginLab Grown
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG734518739
Side View
Table 68.0%Crown 30.9°Girdle: MED-STKPavilion 40°Culet: NoneDepth 55.8%

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: Nov 1
Current: €1,355 EUR|Low: €273 EUR|High: €1,520 EUR|Avg: €644 EUR|-9.8%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
November 1, 2026
Retailer 7€273 EUR
Retailer 4€316 EUR
Retailer 12€338 EUR
Retailer 13€338 EUR
Retailer 5€347 EUR
Retailer 6€479 EUR
Retailer 9€552 EUR
Retailer 2€599 EUR
Retailer 8€606 EUR
Retailer 11€732 EUR
Retailer 10€1,038 EUR
Retailer 3€1,087 EUR
MOH London€1,355 EUR

42 data points across 13 retailers

13 retailers€273 EUR to €1,355 EUR

A
Cheapest Retailer
-
€273 EUR
$305 USD
B+
Retailer 2
-
€316 EUR
$353 USD
View
Retailer 3
-
€338 EUR
$378 USD
View
Price last confirmed 7 days ago
B+
Retailer 4
-
€338 EUR
$378 USD
View
B+
Retailer 5
-
€347 EUR
$388 USD
View
Final sale: no returns
B+
Retailer 6
-
€479 EUR
$535 USD
View
B
Retailer 7
-
€552 EUR
$617 USD
View
B+
Retailer 8
-
€599 EUR
£527 GBP
View
B+
Retailer 9
-
€606 EUR
$677 USD
View
B+
Retailer 10
-
€732 EUR
$818 USD
View
B
Retailer 11
-
€1,038 EUR
$1,160 USD
View
B
Retailer 12
-
€1,087 EUR
$1,214 USD
View
Most Expensive
B
MOH London
LG734518739 · Nov 1
€1,355 EUR
£1,192 GBP
View
12 more retailers have this diamond
Prices start from €273 EURSave up to €1,082 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
2.51ct Round
€273 EUR