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Radiant|Natural|GIA

1.51ct G SI1 Radiant Natural Diamond

GD • G/SI1 • GIA 1313613880

Certificate GIA 1313613880

Diamond specifications and retailer prices

From £6,420 GBP
$8,615 USD
As of October 28, 2026
Save £5,256 GBP (45%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: £11,676 GBP at NZ Jewellers · As of October 30, 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 G colour (near-colourless) and SI1 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 1313613880. Listed at 21 retailers as of October 28, 2026, with prices from £6,420 to £11,676, a £5,256 spread on the same certified stone. NZ Jewellers lists it at £11,676. 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
G
Colour
SI1
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishVery Good
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1313613880
Dimensions7.31 × 6.21 × 4.25 mm
L/W Ratio1.18
Top View
7.31 mm6.21 mm1.51 ctG / SI1
OriginNatural
CutGood
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateGIA 1313613880
Side View
Table 74.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 68.5%

Caratlytics Score

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

Price History

Last verified: Oct 28
Current: £11,676 GBP|Low: £6,420 GBP|High: £11,676 GBP|Avg: £8,257 GBP
NZ Jewellers
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
November 1, 2026
Retailer 4£6,420 GBP
Retailer 5£6,558 GBP
Retailer 8£6,565 GBP
Retailer 13£7,006 GBP
Retailer 15£7,589 GBP
Retailer 6£7,609 GBP
Retailer 7£7,641 GBP
Retailer 10£7,667 GBP
Retailer 3£7,706 GBP
Retailer 14£7,706 GBP
Retailer 9£7,894 GBP
Retailer 16£8,757 GBP
Retailer 12£8,827 GBP
Retailer 11£10,292 GBP
Retailer 2£10,940 GBP
NZ Jewellers£11,676 GBP

31 data points across 16 retailers

21 retailers£6,420 GBP to £11,676 GBP

B
Cheapest Retailer
-
£6,420 GBP
$8,615 USD
B
Retailer 2
-
£6,558 GBP
$8,801 USD
View
B
Retailer 3
-
£6,565 GBP
$8,810 USD
View
B
Retailer 4
-
£7,006 GBP
$9,401 USD
View
B
Retailer 5
-
£7,470 GBP
$10,025 USD
View
B
Retailer 6
-
£7,589 GBP
$10,184 USD
View
Retailer 7
-
£7,609 GBP
$10,211 USD
View
Price last confirmed 8 days ago
B
Retailer 8
-
£7,641 GBP
$10,254 USD
View
B
Retailer 9
-
£7,667 GBP
View
Retailer 10
-
£7,706 GBP
A$15,908 AUD
View
Price last confirmed 10 days ago
B
Retailer 11
-
£7,706 GBP
$10,341 USD
View
B
Retailer 12
-
£7,894 GBP
View
B
Retailer 13
-
£8,085 GBP
$10,850 USD
View
B
Retailer 14
-
£8,085 GBP
$10,850 USD
View
B
Retailer 15
-
£8,354 GBP
$11,210 USD
View
B
Retailer 16
-
£8,757 GBP
$11,751 USD
View
B
Retailer 17
-
£8,827 GBP
€11,281 EUR
View
Retailer 18
-
£9,219 GBP
$12,371 USD
View
Price last confirmed 10 days ago
C
Retailer 19
-
£10,292 GBP
ZAR 223,113 ZAR
View
C
Retailer 20
-
£10,940 GBP
View
Most Expensive
C
NZ Jewellers
10b842fd-9c3b-4b5f-bd6e-a7dedb7deb74 · Oct 30
£11,676 GBP
$15,668 USD
View
20 more retailers have this diamond
Prices start from £6,420 GBPSave up to £5,256 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
£6,420 GBP