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Radiant|Natural|GIA

1.51ct L SI1 Radiant Natural Diamond

EX • L/SI1 • GIA 1555466812

Certificate GIA 1555466812

Diamond specifications and retailer prices

From £1,477 GBP
As of November 2, 2026
Save £2,167 GBP (59%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: £3,644 GBP at NZ Jewellers · As of November 3, 2026
View at NZ Jewellers

About this 1.51ct natural radiant diamond

This 1.51ct natural radiant sits in the one-and-a-half to two carat band, graded L 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 1555466812. Listed at 6 retailers as of November 2, 2026, with prices from £1,477 to £3,644, a £2,167 spread on the same certified stone. NZ Jewellers lists it at £3,644. 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
L
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle51.67°
Pavilion angle36.47°
OriginNatural
Grading LabGIA
CertificateGIA 1555466812
Dimensions7.43 × 5.77 × 3.95 mm
L/W Ratio1.29
Girdle conditionVery Thick
Key to symbols
Twinning Wisp, Knot, Crystal, Feather, Cavity, Needle, Indented Natural
Top View
7.43 mm5.77 mm1.51 ctL / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1555466812
Side View
Table 72.0%Crown 51.67°GirdlePavilion 36.47°Culet: NoneDepth 68.6%

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 2
Current: £3,644 GBP|Low: £1,476 GBP|High: £3,662 GBP|Avg: £1,844 GBP|+12.1%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 2, 2026
Retailer 2£1,477 GBP
Retailer 3£1,494 GBP
Retailer 5£1,517 GBP
Retailer 4£1,520 GBP
Retailer 7£1,552 GBP
Retailer 6£1,563 GBP
NZ Jewellers£3,644 GBP

30 data points across 7 retailers

6 retailers£1,477 GBP to £3,644 GBP

A
Cheapest Retailer
-
£1,477 GBP
A
Retailer 2
-
£1,494 GBP
View
A
Retailer 3
-
£1,517 GBP
View
A
Retailer 4
-
£1,520 GBP
View
A
Retailer 5
-
£1,563 GBP
View
Most Expensive
C
NZ Jewellers
34cf551a-4df4-4abe-a9d9-3085f83ced77 · Nov 3
£3,644 GBP
$4,878 USD
View
5 more retailers have this diamond
Prices start from £1,477 GBPSave up to £2,167 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 Radiant
£1,477 GBP