Radiant|Natural|GIA

1.51ct H SI1 Radiant Natural Diamond

VG • H/SI1 • GIA 2205672627

Certificate GIA 2205672627

Diamond specifications and retailer prices

From £6,711 GBP
As of November 4, 2026
Save £5,343 GBP (44%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: £12,054 GBP at NZ Jewellers · As of November 5, 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 H 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 2205672627. Listed at 17 retailers as of November 4, 2026, with prices from £6,711 to £12,054, a £5,343 spread on the same certified stone. NZ Jewellers lists it at £12,054. 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
H
Colour
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishVery Good
SymmetryGood
FluorescenceMedium
OriginNatural
Grading LabGIA
CertificateGIA 2205672627
Dimensions6.70 × 6.13 × 4.25 mm
L/W Ratio1.09
Culet sizeNone
Cert comments
Surface graining is not shown.
Top View
6.70 mm6.13 mm1.51 ctH / SI1
OriginNatural
CutVery Good
PolishVery Good
SymmetryGood
FluorescenceMedium
CertificateGIA 2205672627
Side View
Table 72.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 69.3%

Caratlytics Score

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B
Good
Decent quality, room for better deals
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 4
Current: £7,841 GBP|Low: £6,619 GBP|High: £11,431 GBP|Avg: £8,563 GBP|-3.0%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 7, 2026
Retailer 7£6,619 GBP
Retailer 8£7,232 GBP
Retailer 1£7,841 GBP
Retailer 6£7,959 GBP
Retailer 2£8,105 GBP
Retailer 3£9,060 GBP
Retailer 4£10,551 GBP
Retailer 5£11,264 GBP

36 data points across 8 retailers

17 retailers£6,711 GBP to £12,054 GBP

Retailer 1
-
£6,619 GBP
Price last confirmed 20 days ago
B
Retailer 2
-
£6,711 GBP
View
B
Retailer 3
-
£7,161 GBP
View
Retailer 4
-
£7,232 GBP
View
Price last confirmed 9 days ago
B
Retailer 5
-
£7,232 GBP
View
Final sale: no returns
B
Retailer 6
-
£7,835 GBP
View
B
Retailer 7
-
£7,841 GBP
View
B
Retailer 8
-
£7,955 GBP
View
Retailer 9
-
£7,959 GBP
View
Price last confirmed 15 days ago
B
Retailer 10
-
£8,105 GBP
View
C
Retailer 11
-
£8,950 GBP
View
C
Retailer 12
-
£9,040 GBP
View
B
Retailer 13
-
£9,060 GBP
View
Retailer 14
-
£9,517 GBP
View
Price last confirmed 15 days ago
C
Retailer 15
-
£10,551 GBP
View
B
Retailer 16
-
£11,264 GBP
View
Most Expensive
C
NZ Jewellers
07877fde-150f-4dc3-9cb0-cc00ebea3972 · Nov 5
£12,054 GBP
$16,134 USD
View
16 more retailers have this diamond
Prices start from £6,711 GBPSave up to £5,343 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
£6,711 GBP