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Round|Natural|GIA

1.51ct F SI2 Round Natural Diamond

GD • F/SI2 • GIA 6501387534

Certificate GIA 6501387534

Diamond specifications and retailer prices

From £2,261 GBP
HK$23,700 HKD
As of November 1, 2026
Save £2,942 GBP (57%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: £5,203 GBP at NZ Jewellers · As of October 30, 2026
View at NZ Jewellers

About this 1.51ct natural round diamond

This 1.51ct natural round sits in the one-and-a-half to two carat band, graded F colour (colourless) and SI2 clarity (slightly-included), with a standard cut grade and certified by GIA 6501387534. Listed at 14 retailers as of October 30, 2026, with prices from £2,261 to £5,203, a £2,942 spread on the same certified stone. NZ Jewellers lists it at £5,203. 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
F
Colour
SI2
Clarity
Good
Cut

Specifications

CutGood
PolishVery Good
SymmetryVery Good
FluorescenceNone
Crown angle40°
Pavilion angle39.6°
OriginNatural
Grading LabGIA
CertificateGIA 6501387534
Dimensions7.00 × 6.94 × 4.62 mm
L/W Ratio1.01
Star length50%
Lower girdle75%
Top View
7.00 mm6.94 mm1.51 ctF / SI2
OriginNatural
CutGood
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateGIA 6501387534
Side View
Table 55.0%Crown 40°Girdle: THK-VTKPavilion 39.6°Culet: NoneDepth 66.6%

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: £5,203 GBP|Low: £2,177 GBP|High: £5,459 GBP|Avg: £3,061 GBP|-4.7%
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
November 2, 2026
Retailer 10£2,261 GBP
Retailer 13£2,287 GBP
Retailer 3£2,344 GBP
Retailer 9£2,379 GBP
Retailer 11£2,402 GBP
Retailer 4£2,497 GBP
Retailer 5£2,705 GBP
Retailer 14£2,705 GBP
Retailer 15£2,809 GBP
Retailer 7£3,111 GBP
Retailer 12£3,122 GBP
Retailer 2£3,282 GBP
Retailer 6£3,411 GBP
Retailer 8£4,994 GBP
NZ Jewellers£5,203 GBP

37 data points across 15 retailers

14 retailers£2,261 GBP to £5,203 GBP

A
Cheapest Retailer
-
£2,261 GBP
HK$23,700 HKD
A
Retailer 2
-
£2,287 GBP
$3,069 USD
View
A
Retailer 3
-
£2,344 GBP
$3,145 USD
View
A
Retailer 4
-
£2,379 GBP
$3,192 USD
View
A
Retailer 5
-
£2,402 GBP
$3,223 USD
View
B+
Retailer 6
-
£2,497 GBP
$3,351 USD
View
Final sale: no returns
B+
Retailer 7
-
£2,705 GBP
$3,630 USD
View
B+
Retailer 8
-
£2,705 GBP
$3,630 USD
View
B+
Retailer 9
-
£2,809 GBP
$3,770 USD
View
B+
Retailer 10
-
£3,122 GBP
$4,189 USD
View
B+
Retailer 11
-
£3,282 GBP
€4,194 EUR
View
Retailer 12
-
£3,411 GBP
$4,577 USD
View
Price last confirmed 10 days ago
B+
Retailer 13
-
£4,994 GBP
View
Most Expensive
B+
NZ Jewellers
2152540f-a55c-4b61-ad3a-67354a5952d5 · Oct 30
£5,203 GBP
$6,982 USD
View
13 more retailers have this diamond
Prices start from £2,261 GBPSave up to £2,942 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 Round
£2,261 GBP