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Round|Natural|GIA

1.51ct I SI2 Round Natural Diamond

EX • I/SI2 • GIA 6535460829

Certificate GIA 6535460829

Diamond specifications and retailer prices

From £1,768 GBP
As of November 4, 2026
Save £5,563 GBP (76%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: £7,332 GBP at Wholesale Diamonds Direct · As of November 4, 2026
View at Wholesale Diamonds Direct

About this 1.51ct natural round diamond

This 1.51ct natural round sits in the one-and-a-half to two carat band, graded I colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 6535460829. Listed at 16 retailers as of November 4, 2026, with prices from £1,768 to £7,332, a £5,563 spread on the same certified stone. Wholesale Diamonds Direct lists it at £7,332. 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
I
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33°
Pavilion angle41.6°
OriginNatural
Grading LabGIA
CertificateGIA 6535460829
Dimensions7.38 × 7.33 × 4.55 mm
L/W Ratio1.01
Star length50%
Lower girdle80%
Cert comments
Additional clouds are not shown. Pinpoints are not shown.
Key to symbols
Cloud, Feather, Crystal, Needle
Top View
7.38 mm7.33 mm1.51 ctI / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6535460829
Side View
Table 59.0%Crown 33°Girdle: MED-STKPavilion 41.6°Culet: NoneDepth 61.8%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 4
Current: £5,188 GBP|Low: £1,768 GBP|High: £7,332 GBP|Avg: £3,691 GBP|-0.3%
Retailer 1
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
Wholesale Diamonds Direct
November 6, 2026
Retailer 15£1,768 GBP
Retailer 7£1,983 GBP
Retailer 13£2,056 GBP
Retailer 14£2,135 GBP
Retailer 6£2,138 GBP
Retailer 8£2,325 GBP
Retailer 16£2,372 GBP
Retailer 9£3,751 GBP
Retailer 17£4,266 GBP
Retailer 10£4,280 GBP
Retailer 12£4,299 GBP
Retailer 18£4,772 GBP
Retailer 2£4,832 GBP
Retailer 3£5,104 GBP
Retailer 4£5,104 GBP
Retailer 11£5,173 GBP
Retailer 1£5,188 GBP
Retailer 5£5,275 GBP
Wholesale Diamonds Direct£7,332 GBP

28 data points across 19 retailers

16 retailers£1,768 GBP to £7,332 GBP

A
Cheapest Retailer
-
£1,768 GBP
A
Retailer 2
-
£1,983 GBP
View
A
Retailer 3
-
£2,056 GBP
View
A
Retailer 4
-
£2,135 GBP
View
Retailer 5
-
£2,138 GBP
View
Price last confirmed 8 days ago
A
Retailer 6
-
£2,372 GBP
View
B+
Retailer 7
-
£4,266 GBP
View
B+
Retailer 8
-
£4,299 GBP
View
B+
Retailer 9
-
£4,772 GBP
View
B+
Retailer 10
-
£4,832 GBP
View
B
Retailer 11
-
£5,104 GBP
View
B
Retailer 12
-
£5,104 GBP
View
B+
Retailer 13
-
£5,173 GBP
View
B+
Retailer 14
-
£5,188 GBP
View
B
Retailer 15
-
£5,275 GBP
View
Most Expensive
B
Wholesale Diamonds Direct
623164163 · Nov 4
£7,332 GBP
$9,868 USD
View
15 more retailers have this diamond
Prices start from £1,768 GBPSave up to £5,563 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
1.51ct Round
£1,768 GBP