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1.51ct H SI1 Round Lab Grown Diamond

EX • H/SI1 • IGI LG12253607

Shape and cutting style on the report: Round brilliant

Certificate IGI LG12253607

Diamond specifications and retailer prices

From $581 NZD
$327 USD
As of November 1, 2026
Save $4,591 NZD (89%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $5,172 NZD at Do Amore Diamonds · As of November 2, 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 LG12253607 or 12253607. Listed at 18 retailers as of November 1, 2026, with prices from $581 to $5,172, a $4,591 spread on the same certified stone. Do Amore Diamonds lists it at $5,172. 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
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.5°
Pavilion angle41.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG12253607
Dimensions7.33 × 7.36 × 4.58 mm
L/W Ratio1.00
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
7.33 mm7.36 mm1.51 ctH / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG12253607
Side View
Table 59.0%Crown 35.5°Girdle: MediumPavilion 41.5°Culet: NoneDepth 62.3%

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: $5,172 NZD|Low: $581 NZD|High: $5,172 NZD|Avg: $1,693 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
Retailer 13
Retailer 14
Retailer 15
Retailer 16
Retailer 17
Retailer 18
November 2, 2026
Retailer 17$581 NZD
Retailer 14$675 NZD
Retailer 11$711 NZD
Retailer 5$722 NZD
Retailer 13$722 NZD
Retailer 18$830 NZD
Retailer 6$995 NZD
Retailer 7$1,182 NZD
Retailer 9$1,240 NZD
Retailer 2$1,285 NZD
Retailer 15$1,312 NZD
Retailer 10$1,433 NZD
Retailer 16$2,115 NZD
Retailer 8$2,168 NZD
Retailer 4$2,559 NZD
Retailer 3$2,838 NZD
Retailer 12$3,126 NZD
Do Amore Diamonds$5,172 NZD

16 data points across 18 retailers

18 retailers$581 NZD to $5,172 NZD

A
Cheapest Retailer
-
$581 NZD
$327 USD
A
Retailer 2
-
$675 NZD
$380 USD
View
B+
Retailer 3
-
$711 NZD
$400 USD
View
Retailer 4
-
$722 NZD
$406 USD
View
Price last confirmed 8 days ago
A
Retailer 5
-
$722 NZD
$406 USD
View
A
Retailer 6
-
$830 NZD
$467 USD
View
A
Retailer 7
-
$995 NZD
$560 USD
View
Retailer 8
-
$1,182 NZD
$665 USD
View
Price last confirmed 12 days ago
A
Retailer 9
-
$1,240 NZD
$698 USD
View
A
Retailer 10
-
$1,285 NZD
£569 GBP
View
A
Retailer 11
-
$1,312 NZD
$738 USD
View
A
Retailer 12
-
$1,433 NZD
$807 USD
View
A
Retailer 13
-
$2,115 NZD
$1,190 USD
View
A
Retailer 14
-
$2,168 NZD
$1,220 USD
View
B+
Retailer 15
-
$2,559 NZD
$1,440 USD
View
B+
Retailer 16
-
$2,838 NZD
$1,597 USD
View
B+
Retailer 17
-
$3,126 NZD
£1,385 GBP
View
Most Expensive
B
Do Amore Diamonds
27-49FCA44C2 · Nov 2
$5,172 NZD
$2,910 USD
View
17 more retailers have this diamond
Prices start from $581 NZDSave up to $4,591 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
$581 NZD