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Round|Natural|GIA

1.51ct F I1 Round Natural Diamond

EX • F/I1 • GIA 1559183875

Certificate GIA 1559183875

Diamond specifications and retailer prices

From £4,082 GBP
$5,477 USD
As of November 2, 2026
Save £1,281 GBP (24%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: £7,214 GBP at Wholesale Diamonds Direct · As of October 26, 2026
View at Wholesale Diamonds Direct

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 I1 clarity (included), with a top-tier cut grade and certified by GIA 1559183875. Listed at 8 retailers as of November 1, 2026, with a 31% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.51
Carat
F
Colour
I1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishVery Good
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1559183875
Dimensions7.28 × 7.31 × 4.58 mm
L/W Ratio1.00
Culet sizeNone
Top View
7.28 mm7.31 mm1.51 ctF / I1
OriginNatural
CutExcellent
PolishVery Good
SymmetryExcellent
FluorescenceNone
CertificateGIA 1559183875
Side View
Table 56.0%CrownGirdle: MED-STKPavilionCulet: NoneDepth 62.6%

Caratlytics Score

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

Price History

Last verified: Nov 2
Current: £5,362 GBP|Low: £2,149 GBP|High: £7,214 GBP|Avg: £4,300 GBP|+7.4%
Retailer 1
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
Wholesale Diamonds Direct
November 1, 2026
Retailer 10£2,149 GBP
Retailer 5£2,605 GBP
Retailer 6£2,631 GBP
Retailer 2£3,391 GBP
Retailer 3£3,840 GBP
Retailer 8£4,082 GBP
Retailer 7£4,262 GBP
Retailer 11£4,493 GBP
Retailer 4£4,530 GBP
Retailer 9£4,754 GBP
Retailer 12£5,023 GBP
Retailer 14£5,023 GBP
Retailer 13£5,194 GBP
Retailer 1£5,362 GBP
Wholesale Diamonds Direct£7,214 GBP

12 data points across 15 retailers

8 retailers£4,082 GBP to £5,362 GBP

B+
Cheapest Retailer
-
£4,082 GBP
$5,477 USD
B+
Retailer 2
-
£4,262 GBP
$5,720 USD
View
B+
Retailer 3
-
£4,754 GBP
$6,380 USD
View
B
Retailer 4
-
£5,023 GBP
$6,740 USD
View
B
Retailer 5
-
£5,023 GBP
$6,740 USD
View
B
Retailer 6
-
£5,194 GBP
$6,970 USD
View
B
Retailer 7
-
£5,362 GBP
€6,853 EUR
View
Most Expensive
B
Wholesale Diamonds Direct
493092807 · Oct 26
£7,214 GBP
$9,680 USD
View
Price last confirmed 7 days ago
7 more retailers have this diamond
Prices start from £4,082 GBPSave up to £1,281 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 Round
£4,082 GBP