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2.50ct I SI1 Round Lab Grown Diamond

EX • I/SI1 • IGI LG499190306

Shape and cutting style on the report: Round brilliant

Certificate IGI LG499190306

Diamond specifications and retailer prices

From $2,719 NZD
$1,530 USD
As of October 30, 2026
Save $16,068 NZD (86%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $18,787 NZD at Moon Ocean · As of November 2, 2026
View at Moon Ocean

About this 2.5ct lab-grown round diamond

This 2.5ct lab-grown round sits in the two to three carat band, graded I colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG499190306 or 499190306. Listed at 12 retailers as of October 30, 2026, with prices from $2,719 to $18,787, a $16,068 spread on the same certified stone. Moon Ocean lists it at $18,787. 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

2.50
Carat
I
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.1°
Pavilion angle40.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG499190306
Dimensions8.75 × 8.81 × 5.21 mm
L/W Ratio1.01
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
8.75 mm8.81 mm2.50 ctI / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG499190306
Side View
Table 60.5%Crown 34.1°Girdle: MED-STKPavilion 40.2°Culet: NoneDepth 59.3%

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 30
Current: $18,787 NZD|Low: $2,719 NZD|High: $19,046 NZD|Avg: $9,532 NZD|-0.1%
Moon Ocean
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 2, 2026
Retailer 3$2,719 NZD
Retailer 6$5,792 NZD
Retailer 9$6,487 NZD
Retailer 7$6,720 NZD
Retailer 5$6,994 NZD
Retailer 10$7,818 NZD
Retailer 4$9,269 NZD
Retailer 8$10,429 NZD
Retailer 2$17,030 NZD
Moon Ocean$18,787 NZD

41 data points across 10 retailers

12 retailers$2,719 NZD to $18,787 NZD

A
Cheapest Retailer
-
$2,719 NZD
$1,530 USD
B+
Retailer 2
-
$5,792 NZD
$3,259 USD
View
B+
Retailer 3
-
$6,302 NZD
$3,546 USD
View
B+
Retailer 4
-
$6,487 NZD
$3,650 USD
View
Final sale: no returns
B
Retailer 5
-
$6,720 NZD
$3,781 USD
View
Retailer 6
-
$6,720 NZD
$3,781 USD
View
Price last confirmed 21 days ago
B+
Retailer 7
-
$6,994 NZD
$3,935 USD
View
B
Retailer 8
-
$8,396 NZD
$4,724 USD
View
B
Retailer 9
-
$9,269 NZD
$5,215 USD
View
B
Retailer 10
-
$10,429 NZD
$5,868 USD
View
B
Retailer 11
-
$17,030 NZD
£7,545 GBP
View
Most Expensive
B
Moon Ocean
NVL-04D69BC98-306 · Nov 2
$18,787 NZD
£8,323 GBP
View
11 more retailers have this diamond
Prices start from $2,719 NZDSave up to $16,068 NZD

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
2.50ct Round
$2,719 NZD