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Round|Lab Grown|IGI

2.51ct K SI1 Round Lab Grown Diamond

EX • K/SI1 • IGI LG485161697

Shape and cutting style on the report: Round brilliant

Certificate IGI LG485161697

Diamond specifications and retailer prices

From $3,124 AUD
As of November 5, 2026
Save $6,709 AUD (68%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: $9,833 AUD at MOH London · As of November 3, 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 K colour (faint-tinted) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG485161697 or 485161697. Listed at 9 retailers as of November 3, 2026, with prices from $3,124 to $9,833, a $6,709 spread on the same certified stone. MOH London lists it at $9,833. 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

2.51
Carat
K
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle31.9°
Pavilion angle40.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG485161697
Dimensions8.89 × 8.91 × 5.21 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
8.89 mm8.91 mm2.51 ctK / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG485161697
Side View
Table 61.5%Crown 31.9°GirdlePavilion 40.7°Culet: NoneDepth 58.6%

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 5
Current: $9,833 AUD|Low: $3,124 AUD|High: $9,965 AUD|Avg: $5,608 AUD
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 1, 2026
Retailer 4$3,124 AUD
Retailer 5$3,624 AUD
Retailer 2$3,857 AUD
Retailer 7$4,631 AUD
Retailer 6$5,663 AUD
Retailer 3$5,681 AUD
MOH London$9,833 AUD

18 data points across 7 retailers

9 retailers$3,124 AUD to $9,833 AUD

A
Cheapest Retailer
-
$3,124 AUD
B+
Retailer 2
-
$3,400 AUD
View
B+
Retailer 3
-
$3,624 AUD
View
Retailer 4
-
$3,624 AUD
View
Price last confirmed 26 days ago
B+
Retailer 5
-
$3,857 AUD
View
B
Retailer 6
-
$4,983 AUD
View
B
Retailer 7
-
$5,663 AUD
View
B
Retailer 8
-
$5,681 AUD
View
Most Expensive
B
MOH London
LG485161697 · Nov 3
$9,833 AUD
£5,420 GBP
View
8 more retailers have this diamond
Prices start from $3,124 AUDSave up to $6,709 AUD

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
$3,124 AUD