Oval|Lab Grown|GIA

1.57ct D SI1 Oval Lab Grown Diamond

ID • D/SI1 • GIA 1488286741

Certificate GIA 1488286741

Diamond specifications and retailer prices

From £199 GBP
$266 USD
As of October 27, 2026
Save £555 GBP (74%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: £753 GBP at NZ Jewellers · As of October 28, 2026
View at NZ Jewellers

About this 1.57ct lab-grown oval diamond

This 1.57ct lab-grown oval sits in the one-and-a-half to two carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 1488286741. Listed at 5 retailers as of October 27, 2026, with prices from £199 to £753, a £555 spread on the same certified stone. NZ Jewellers lists it at £753. 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
D
Colour
SI1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginLab Grown
Grading LabGIA
CertificateGIA 1488286741
Dimensions9.30 × 6.56 × 4.15 mm
L/W Ratio1.42
Culet sizeNone
Key to symbols
Growth Remnant
Top View
9.30 mm6.56 mm1.57 ctD / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1488286741
Side View
Table 59.0%CrownGirdle: MED-STKPavilionCulet: NoneDepth 63.2%

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: Oct 27
Current: £753 GBP|Low: £171 GBP|High: £1,687 GBP|Avg: £637 GBP
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
October 30, 2026
Retailer 4£199 GBP
Retailer 5£212 GBP
Retailer 3£225 GBP
Retailer 2£531 GBP
NZ Jewellers£753 GBP
Retailer 6£1,687 GBP

5 data points across 6 retailers

5 retailers£199 GBP to £753 GBP

A
Cheapest Retailer
-
£199 GBP
$266 USD
A
Retailer 2
-
£212 GBP
$284 USD
View
A
Retailer 3
-
£225 GBP
$302 USD
View
B+
Retailer 4
-
£531 GBP
$711 USD
View
Most Expensive
B
NZ Jewellers
183be7ed-f4f4-4135-a6f1-b5774f659b7e · Oct 28
£753 GBP
$1,009 USD
View
4 more retailers have this diamond
Prices start from £199 GBPSave up to £555 GBP

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 Oval
£199 GBP