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Radiant|Natural|GIA

1.51ct I SI1 Radiant Natural Diamond

VG • I/SI1 • GIA 6552357437

Certificate GIA 6552357437

Diamond specifications and retailer prices

From £2,742 GBP
HK$28,700 HKD
As of November 1, 2026
Save £2,604 GBP (49%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: £5,345 GBP at Wholesale Diamonds Direct · As of October 27, 2026
View at Wholesale Diamonds Direct

About this 1.51ct natural radiant diamond

This 1.51ct natural radiant sits in the one-and-a-half to two carat band, graded I colour (near-colourless) and SI1 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 6552357437. Listed at 14 retailers as of October 27, 2026, with prices from £2,742 to £5,345, a £2,604 spread on the same certified stone. Wholesale Diamonds Direct lists it at £5,345. 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
I
Colour
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryVery Good
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 6552357437
Dimensions7.70 × 5.64 × 4.00 mm
L/W Ratio1.37
Top View
7.70 mm5.64 mm1.51 ctI / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 6552357437
Side View
Table 67.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 70.9%

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 1
Current: £2,800 GBP|Low: £2,675 GBP|High: £5,345 GBP|Avg: £3,446 GBP|+0.0%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Wholesale Diamonds Direct
November 2, 2026
Retailer 5£2,742 GBP
Retailer 1£2,800 GBP
Retailer 6£2,925 GBP
Retailer 3£2,941 GBP
Retailer 8£3,141 GBP
Retailer 10£3,266 GBP
Retailer 7£3,315 GBP
Retailer 2£3,484 GBP
Retailer 9£3,856 GBP
Retailer 11£3,882 GBP
Retailer 4£4,074 GBP
Wholesale Diamonds Direct£5,345 GBP

35 data points across 12 retailers

14 retailers£2,742 GBP to £5,345 GBP

A
Cheapest Retailer
-
£2,742 GBP
HK$28,700 HKD
A
Retailer 2
-
£2,800 GBP
₹357,319 INR
View
Retailer 3
-
£2,925 GBP
€3,733 EUR
View
Price last confirmed 8 days ago
A
Retailer 4
-
£2,941 GBP
$3,940 USD
View
Final sale: no returns
A
Retailer 5
-
£3,054 GBP
A$6,295 AUD
View
A
Retailer 6
-
£3,141 GBP
SGD 5,687 SGD
View
B+
Retailer 7
-
£3,266 GBP
$4,376 USD
View
A
Retailer 8
-
£3,315 GBP
$4,442 USD
View
B+
Retailer 9
-
£3,366 GBP
A$6,938 AUD
View
Retailer 10
-
£3,484 GBP
SGD 6,308 SGD
View
Price last confirmed 7 days ago
B+
Retailer 11
-
£3,856 GBP
$5,166 USD
View
B+
Retailer 12
-
£3,882 GBP
$5,202 USD
View
B+
Retailer 13
-
£4,074 GBP
View
Most Expensive
B
Wholesale Diamonds Direct
378736955 · Oct 27
£5,345 GBP
$7,162 USD
View
13 more retailers have this diamond
Prices start from £2,742 GBPSave up to £2,604 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
£2,742 GBP