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1.51ct H SI1 Round Lab Grown Diamond

ID • H/SI1 • IGI LG494167199

Shape and cutting style on the report: Round brilliant

Certificate IGI LG494167199

Diamond specifications and retailer prices

From $710 NZD
$400 USD
As of November 1, 2026
Save $4,453 NZD (86%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $5,163 NZD at Do Amore Diamonds · As of October 31, 2026
View at Do Amore Diamonds

About this 1.51ct lab-grown round diamond

This 1.51ct lab-grown round sits in the one-and-a-half to two carat band, graded H colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG494167199 or 494167199. Listed at 12 retailers as of October 31, 2026, with prices from $710 to $5,163, a $4,453 spread on the same certified stone. Do Amore Diamonds lists it at $5,163. 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

1.51
Carat
H
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35°
Pavilion angle41.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG494167199
Dimensions7.35 × 7.38 × 4.55 mm
L/W Ratio1.00
Girdle conditionFaceted
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
7.35 mm7.38 mm1.51 ctH / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG494167199
Side View
Table 58.0%Crown 35°Girdle: MediumPavilion 41.1°Culet: NoneDepth 61.8%

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: $5,163 NZD|Low: $710 NZD|High: $5,163 NZD|Avg: $1,909 NZD|+0.3%
Do Amore Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 1, 2026
Retailer 7$710 NZD
Retailer 9$829 NZD
Retailer 11$994 NZD
Retailer 3$1,238 NZD
Retailer 6$1,283 NZD
Retailer 2$1,402 NZD
Retailer 4$1,431 NZD
Retailer 8$2,111 NZD
Retailer 12$2,165 NZD
Retailer 10$2,833 NZD
Retailer 5$3,105 NZD
Do Amore Diamonds$5,163 NZD

15 data points across 12 retailers

12 retailers$710 NZD to $5,163 NZD

B+
Cheapest Retailer
-
$710 NZD
$400 USD
A
Retailer 2
-
$829 NZD
$467 USD
View
A
Retailer 3
-
$994 NZD
$560 USD
View
A
Retailer 4
-
$1,238 NZD
$698 USD
View
A
Retailer 5
-
$1,283 NZD
£569 GBP
View
A
Retailer 6
-
$1,402 NZD
$790 USD
View
A
Retailer 7
-
$1,431 NZD
$807 USD
View
A
Retailer 8
-
$2,111 NZD
$1,190 USD
View
A
Retailer 9
-
$2,165 NZD
$1,220 USD
View
B+
Retailer 10
-
$2,833 NZD
$1,597 USD
View
B+
Retailer 11
-
$3,105 NZD
£1,378 GBP
View
Most Expensive
B
Do Amore Diamonds
27-4CC7EC046 · Oct 31
$5,163 NZD
$2,910 USD
View
11 more retailers have this diamond
Prices start from $710 NZDSave up to $4,453 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
1.51ct Round
$710 NZD