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Radiant|Natural|GIA

1.51ct L SI1 Radiant Natural Diamond

GD • L/SI1 • GIA 6382782765

Certificate GIA 6382782765

Diamond specifications and retailer prices

From £1,555 GBP
As of November 6, 2026
Save £756 GBP (33%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: £2,311 GBP at 77 Diamonds · As of November 7, 2026
View at 77 Diamonds

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 standard cut grade stated by the retailer rather than the lab and certified by GIA 6382782765. Listed at 5 retailers as of November 6, 2026, with prices from £1,555 to £2,311, a £756 spread on the same certified stone. 77 Diamonds lists it at £2,311. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.51
Carat
L
Colour
SI1
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6382782765
Dimensions7.11 × 5.76 × 3.95 mm
L/W Ratio1.23
Top View
7.11 mm5.76 mm1.51 ctL / SI1
OriginNatural
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6382782765
Side View
Table 66.0%CrownGirdle: VTN-VTKPavilionCulet: NoneDepth 68.6%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: £2,311 GBP|Low: £1,496 GBP|High: £2,334 GBP|Avg: £1,828 GBP|+1.4%
77 Diamonds
Retailer 2
Retailer 3
Retailer 4
November 7, 2026
Retailer 3£1,539 GBP
Retailer 4£1,555 GBP
Retailer 2£1,896 GBP
77 Diamonds£2,311 GBP

36 data points across 4 retailers

5 retailers£1,555 GBP to £2,311 GBP

Retailer 1
-
£1,539 GBP
Price last confirmed 10 days ago
B+
Retailer 2
-
£1,555 GBP
View
B+
Retailer 3
-
£1,649 GBP
View
B
Retailer 4
-
£1,896 GBP
View
Most Expensive
B
77 Diamonds
RADMBGCNQWKCM · Nov 7
£2,311 GBP
View
4 more retailers have this diamond
Prices start from £1,555 GBPSave up to £756 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.

B+
1.51ct Radiant
£1,555 GBP