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Round|Lab Grown|IGI

1.51ct H SI1 Round Lab Grown Diamond

ID • H/SI1 • IGI LG494168031

Shape and cutting style on the report: Round brilliant

Certificate IGI LG494168031

Diamond specifications and retailer prices

From $466 AUD
$327 USD
As of November 1, 2026
Save $3,677 AUD (89%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $4,143 AUD 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 LG494168031 or 494168031. Listed at 19 retailers as of October 31, 2026, with prices from $466 to $4,143, a $3,677 spread on the same certified stone. Do Amore Diamonds lists it at $4,143. 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 angle35.5°
Pavilion angle41.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG494168031
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 LG494168031
Side View
Table 58.5%Crown 35.5°Girdle: MediumPavilion 41.2°Culet: NoneDepth 61.7%

Caratlytics Score

How it works →
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: $4,143 AUD|Low: $466 AUD|High: $4,143 AUD|Avg: $1,355 AUD|+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
Retailer 19
November 1, 2026
Retailer 12$466 AUD
Retailer 17$541 AUD
Retailer 18$569 AUD
Retailer 3$578 AUD
Retailer 15$578 AUD
Retailer 5$665 AUD
Retailer 7$797 AUD
Retailer 8$947 AUD
Retailer 10$993 AUD
Retailer 14$1,029 AUD
Retailer 19$1,051 AUD
Retailer 2$1,125 AUD
Retailer 11$1,148 AUD
Retailer 4$1,694 AUD
Retailer 9$1,737 AUD
Retailer 16$2,050 AUD
Retailer 6$2,273 AUD
Retailer 13$2,491 AUD
Do Amore Diamonds$4,143 AUD

16 data points across 19 retailers

19 retailers$466 AUD to $4,143 AUD

A
Cheapest Retailer
-
$466 AUD
$327 USD
A
Retailer 2
-
$541 AUD
$380 USD
View
B+
Retailer 3
-
$569 AUD
$400 USD
View
Retailer 4
-
$578 AUD
$406 USD
View
Price last confirmed 7 days ago
A
Retailer 5
-
$578 AUD
$406 USD
View
A
Retailer 6
-
$665 AUD
$467 USD
View
A
Retailer 7
-
$797 AUD
$560 USD
View
Retailer 8
-
$947 AUD
$665 USD
View
Price last confirmed 11 days ago
A
Retailer 9
-
$993 AUD
$698 USD
View
A
Retailer 10
-
$1,029 AUD
£569 GBP
View
A
Retailer 11
-
$1,051 AUD
$738 USD
View
A
Retailer 12
-
$1,125 AUD
$790 USD
View
A
Retailer 13
-
$1,148 AUD
$807 USD
View
A
Retailer 14
-
$1,694 AUD
$1,190 USD
View
A
Retailer 15
-
$1,737 AUD
$1,220 USD
View
B+
Retailer 16
-
$2,050 AUD
$1,440 USD
View
B+
Retailer 17
-
$2,273 AUD
$1,597 USD
View
B+
Retailer 18
-
$2,491 AUD
£1,378 GBP
View
Most Expensive
B
Do Amore Diamonds
27-8541BC8C8 · Oct 31
$4,143 AUD
$2,910 USD
View
18 more retailers have this diamond
Prices start from $466 AUDSave up to $3,677 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
1.51ct Round
$466 AUD