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Round|Natural|GIA

1.51ct H SI2 Round Natural Diamond

EX • H/SI2 • GIA 6561487499

Certificate GIA 6561487499

Diamond specifications and retailer prices

From £2,528 GBP
$3,387 USD
As of October 31, 2026
Save £4,069 GBP (62%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: £6,597 GBP at MOH London · As of October 26, 2026
View at MOH London

About this 1.51ct natural round diamond

This 1.51ct natural round sits in the one-and-a-half to two carat band, graded H colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 6561487499. Listed at 19 retailers as of October 26, 2026, with prices from £2,528 to £6,597, a £4,069 spread on the same certified stone. MOH London lists it at £6,597. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

1.51
Carat
H
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32.5°
Pavilion angle41.2°
OriginNatural
Grading LabGIA
CertificateGIA 6561487499
Dimensions7.48 × 7.45 × 4.47 mm
L/W Ratio1.00
Girdle conditionFaceted
Top View
7.48 mm7.45 mm1.51 ctH / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6561487499
Side View
Table 59.0%Crown 32.5°Girdle: MED-STKPavilion 41.2°Culet: NoneDepth 59.9%

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: Oct 31
Current: £6,597 GBP|Low: £2,528 GBP|High: £7,442 GBP|Avg: £4,451 GBP|-0.6%
MOH London
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
Retailer 17
Retailer 18
Retailer 19
November 2, 2026
Retailer 4£2,528 GBP
Retailer 18£2,720 GBP
Retailer 6£2,826 GBP
Retailer 14£3,076 GBP
Retailer 13£3,214 GBP
Retailer 10£3,295 GBP
Retailer 19£3,471 GBP
Retailer 2£3,533 GBP
Retailer 16£3,661 GBP
Retailer 7£3,832 GBP
Retailer 12£3,873 GBP
Retailer 3£4,041 GBP
Retailer 9£4,217 GBP
Retailer 5£4,740 GBP
Retailer 11£4,787 GBP
Retailer 15£4,933 GBP
Retailer 17£5,050 GBP
Retailer 8£6,253 GBP
MOH London£6,597 GBP

22 data points across 19 retailers

19 retailers£2,528 GBP to £6,597 GBP

A
Cheapest Retailer
-
£2,528 GBP
$3,387 USD
A
Retailer 2
-
£2,720 GBP
$3,645 USD
View
A
Retailer 3
-
£2,826 GBP
$3,786 USD
View
A
Retailer 4
-
£3,076 GBP
HK$32,200 HKD
View
A
Retailer 5
-
£3,214 GBP
$4,306 USD
View
Retailer 6
-
£3,295 GBP
$4,415 USD
View
Price last confirmed 15 days ago
A
Retailer 7
-
£3,471 GBP
$4,651 USD
View
A
Retailer 8
-
£3,533 GBP
$4,734 USD
View
Final sale: no returns
A
Retailer 9
-
£3,661 GBP
$4,905 USD
View
A
Retailer 10
-
£3,832 GBP
SGD 6,939 SGD
View
A
Retailer 11
-
£3,873 GBP
View
A
Retailer 12
-
£4,041 GBP
$5,414 USD
View
A
Retailer 13
-
£4,217 GBP
$5,650 USD
View
B+
Retailer 14
-
£4,740 GBP
$6,351 USD
View
B+
Retailer 15
-
£4,933 GBP
$6,610 USD
View
B+
Retailer 16
-
£5,050 GBP
View
B
Retailer 17
-
£6,253 GBP
$8,378 USD
View
Retailer 18
-
£6,317 GBP
$8,464 USD
View
Price last confirmed 13 days ago
Most Expensive
B
MOH London
651FA8153 · Oct 26
£6,597 GBP
View
18 more retailers have this diamond
Prices start from £2,528 GBPSave up to £4,069 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
£2,528 GBP