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Round|Natural|GIA

1.50ct H SI1 Round Natural Diamond

EX • H/SI1 • GIA 6562180528

Certificate GIA 6562180528

Diamond specifications and retailer prices

From £3,333 GBP
As of November 5, 2026
Save £3,505 GBP (51%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: £6,837 GBP at Wholesale Diamonds Direct · As of November 6, 2026
View at Wholesale Diamonds Direct

About this 1.5ct natural round diamond

This 1.5ct natural round sits in the one-and-a-half to two carat band, graded H colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 6562180528. Listed at 9 retailers as of November 5, 2026, with prices from £3,333 to £6,837, a £3,505 spread on the same certified stone. Wholesale Diamonds Direct lists it at £6,837. 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

1.50
Carat
H
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.5°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 6562180528
Dimensions7.32 × 4.46 × 4.46 mm
L/W Ratio1.64
Culet sizeNone
Top View
7.32 mm4.46 mm1.50 ctH / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6562180528
Side View
Table 60.0%Crown 34.5°Girdle: THN-STKPavilion 40.8°Culet: NoneDepth 60.8%

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 5
Current: £3,333 GBP|Low: £3,315 GBP|High: £7,387 GBP|Avg: £4,760 GBP|-8.5%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Wholesale Diamonds Direct
November 5, 2026
Retailer 1£3,333 GBP
Retailer 6£3,727 GBP
Retailer 4£3,987 GBP
Retailer 5£4,108 GBP
Retailer 3£4,179 GBP
Retailer 2£4,653 GBP
Retailer 8£4,678 GBP
Retailer 7£6,347 GBP
Wholesale Diamonds Direct£6,837 GBP

42 data points across 9 retailers

9 retailers£3,333 GBP to £6,837 GBP

A
Cheapest Retailer
-
£3,333 GBP
A
Retailer 2
-
£3,727 GBP
View
A
Retailer 3
-
£3,987 GBP
View
B+
Retailer 4
-
£4,108 GBP
View
A
Retailer 5
-
£4,179 GBP
View
B+
Retailer 6
-
£4,653 GBP
View
B+
Retailer 7
-
£4,678 GBP
View
B
Retailer 8
-
£6,347 GBP
View
Most Expensive
B
Wholesale Diamonds Direct
323485686 · Nov 6
£6,837 GBP
$9,152 USD
View
8 more retailers have this diamond
Prices start from £3,333 GBPSave up to £3,505 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
1.50ct Round
£3,333 GBP