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Oval|Natural|GIA

0.90ct K SI1 Oval Natural Diamond

EX • K/SI1 • GIA 1515657312

Certificate GIA 1515657312

Diamond specifications and retailer prices

From £468 GBP
As of November 6, 2026
Save £1,289 GBP (73%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: £1,757 GBP at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 0.9ct natural oval diamond

This 0.9ct natural oval sits in the just-under-one-carat band, graded K colour (faint-tinted) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 1515657312. Listed at 16 retailers as of November 5, 2026, with prices from £468 to £1,757, a £1,289 spread on the same certified stone. NZ Jewellers lists it at £1,757. 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

0.90
Carat
K
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
Crown angle40.16°
Pavilion angle40°
OriginNatural
Grading LabGIA
CertificateGIA 1515657312
Dimensions7.66 × 5.25 × 3.37 mm
L/W Ratio1.46
Culet sizeNone
Key to symbols
Crystal
Top View
7.66 mm5.25 mm0.90 ctK / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 1515657312
Side View
Table 61.0%Crown 40.16°Girdle: STK-VTKPavilion 40°Culet: NoneDepth 64.2%

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: Nov 6
Current: £1,757 GBP|Low: £474 GBP|High: £1,757 GBP|Avg: £783 GBP
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
November 6, 2026
Retailer 9£477 GBP
Retailer 12£545 GBP
Retailer 5£560 GBP
Retailer 13£560 GBP
Retailer 6£576 GBP
Retailer 3£582 GBP
Retailer 8£606 GBP
Retailer 4£646 GBP
Retailer 2£682 GBP
Retailer 7£790 GBP
Retailer 10£820 GBP
Retailer 11£1,024 GBP
NZ Jewellers£1,757 GBP

43 data points across 13 retailers

16 retailers£468 GBP to £1,757 GBP

A
Cheapest Retailer
-
£468 GBP
A
Retailer 2
-
£477 GBP
View
A
Retailer 3
-
£545 GBP
View
A
Retailer 4
-
£560 GBP
View
Retailer 5
-
£560 GBP
View
Price last confirmed 8 days ago
A
Retailer 6
-
£569 GBP
View
A
Retailer 7
-
£576 GBP
View
A
Retailer 8
-
£582 GBP
View
A
Retailer 9
-
£606 GBP
View
A
Retailer 10
-
£646 GBP
View
A
Retailer 11
-
£682 GBP
View
B+
Retailer 12
-
£777 GBP
View
B+
Retailer 13
-
£790 GBP
View
B+
Retailer 14
-
£820 GBP
View
B+
Retailer 15
-
£1,024 GBP
View
Most Expensive
B
NZ Jewellers
655b4daf-6264-4c7e-9924-30d07812fd9f · Nov 5
£1,757 GBP
$2,352 USD
View
15 more retailers have this diamond
Prices start from £468 GBPSave up to £1,289 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
0.90ct Oval
£468 GBP