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Round|Lab Grown|IGI

1.57ct G SI1 Round Lab Grown Diamond

ID • G/SI1 • IGI LG442038198

Shape and cutting style on the report: Round brilliant

Certificate IGI LG442038198

Diamond specifications and retailer prices

From $525 NZD
$296 USD
As of November 1, 2026
Save $2,355 NZD (82%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $4,666 NZD at Do Amore Diamonds · As of November 1, 2026
View at Do Amore Diamonds

About this 1.57ct lab-grown round diamond

This 1.57ct lab-grown round sits in the one-and-a-half to two carat band, graded G colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG442038198 or 442038198. Listed at 15 retailers as of November 1, 2026, with a 448% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

1.57
Carat
G
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34°
Pavilion angle41°
OriginLab Grown
Grading LabIGI
CertificateIGI LG442038198
Dimensions7.57 × 7.51 × 4.55 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Chemical Vapor Deposition (CVD) laboratory grown diamond is classified as Type IIa
Top View
7.57 mm7.51 mm1.57 ctG / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG442038198
Side View
Table 59.0%Crown 34°Girdle: MediumPavilion 41°Culet: NoneDepth 60.3%

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: $4,666 NZD|Low: $328 NZD|High: $4,666 NZD|Avg: $1,456 NZD
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
November 2, 2026
Retailer 6$328 NZD
Retailer 9$525 NZD
Retailer 12$651 NZD
Retailer 13$651 NZD
Retailer 10$708 NZD
Retailer 11$932 NZD
Retailer 14$1,068 NZD
Retailer 2$1,271 NZD
Retailer 4$1,495 NZD
Retailer 8$2,000 NZD
Retailer 5$2,340 NZD
Retailer 3$2,596 NZD
Retailer 7$2,880 NZD
Do Amore Diamonds$4,666 NZD

29 data points across 14 retailers

15 retailers$525 NZD to $2,880 NZD

Retailer 1
-
$477 NZD
$269 USD
Price last confirmed 27 days ago
Retailer 2
-
$509 NZD
$287 USD
View
Price last confirmed 30 days ago
A
Retailer 3
-
$525 NZD
$296 USD
View
A
Retailer 4
-
$651 NZD
$367 USD
View
Retailer 5
-
$651 NZD
$367 USD
View
Price last confirmed 8 days ago
A
Retailer 6
-
$708 NZD
$399 USD
View
B+
Retailer 7
-
$932 NZD
$525 USD
View
B+
Retailer 8
-
$1,068 NZD
$602 USD
View
B+
Retailer 9
-
$1,271 NZD
£564 GBP
View
B
Retailer 10
-
$1,495 NZD
$843 USD
View
B
Retailer 11
-
$2,000 NZD
$1,127 USD
View
B
Retailer 12
-
$2,340 NZD
$1,319 USD
View
B
Retailer 13
-
$2,596 NZD
$1,463 USD
View
B
Retailer 14
-
$2,880 NZD
£1,278 GBP
View
Most Expensive
Do Amore Diamonds
27-E64C8D2CC · Nov 1
$4,666 NZD
$2,630 USD
View
Price under review
14 more retailers have this diamond
Prices start from $525 NZDSave up to $2,355 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
1.57ct Round
$525 NZD