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Round|Natural|GIA

0.90ct L SI1 Round Natural Diamond

EX • L/SI1 • GIA 2537257999

Certificate GIA 2537257999

Diamond specifications and retailer prices

From £528 GBP
As of November 5, 2026
Save £1,400 GBP (73%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: £2,447 GBP at Cape Diamonds · As of November 5, 2026
View at Cape Diamonds

About this 0.9ct natural round diamond

This 0.9ct natural round sits in the just-under-one-carat band, graded L colour (faint-tinted) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 2537257999. Listed at 13 retailers as of November 2, 2026, with a 265% 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

0.90
Carat
L
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle36.5°
Pavilion angle40.6°
OriginNatural
Grading LabGIA
CertificateGIA 2537257999
Dimensions6.12 × 6.16 × 3.86 mm
L/W Ratio1.01
Star length45%
Lower girdle75%
Top View
6.12 mm6.16 mm0.90 ctL / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 2537257999
Side View
Table 55.0%Crown 36.5°Girdle: MED-STKPavilion 40.6°Culet: NoneDepth 62.9%

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 5
Current: £2,447 GBP|Low: £528 GBP|High: £3,991 GBP|Avg: £1,062 GBP|+127.5%
Cape 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
November 6, 2026
Retailer 6£528 GBP
Retailer 8£643 GBP
Retailer 5£805 GBP
Retailer 7£923 GBP
Retailer 2£939 GBP
Retailer 12£1,465 GBP
Retailer 3£1,625 GBP
Retailer 4£1,671 GBP
Retailer 13£1,675 GBP
Retailer 10£1,748 GBP
Retailer 9£1,928 GBP
Cape Diamonds£2,447 GBP
Retailer 11£3,991 GBP

37 data points across 13 retailers

13 retailers£528 GBP to £1,928 GBP

A
Cheapest Retailer
-
£528 GBP
A
Retailer 2
-
£643 GBP
View
B+
Retailer 3
-
£805 GBP
View
B+
Retailer 4
-
£923 GBP
View
B+
Retailer 5
-
£939 GBP
View
B
Retailer 6
-
£1,465 GBP
View
B
Retailer 7
-
£1,625 GBP
View
B
Retailer 8
-
£1,671 GBP
View
B
Retailer 9
-
£1,675 GBP
View
B
Retailer 10
-
£1,748 GBP
View
B
Retailer 11
-
£1,928 GBP
View
Most Expensive
Cape Diamonds
cert_2537257999 · Nov 5
£2,447 GBP
ZAR 53,213 ZAR
View
Price under review
11 more retailers have this diamond
Prices start from £528 GBPSave up to £1,400 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 Round
£528 GBP