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Round|Natural|GIA

1.55ct M IF Round Natural Diamond

EX • M/IF • GIA 6421872368

Certificate GIA 6421872368

Diamond specifications and retailer prices

From £2,437 GBP
As of November 6, 2026
Save £1,063 GBP (30%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: £3,500 GBP at Blue Nile · As of November 5, 2026
View at Blue Nile

About this 1.55ct natural round diamond

This 1.55ct natural round sits in the one-and-a-half to two carat band, graded M colour (faint-tinted) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by GIA 6421872368. Listed at 3 retailers as of November 5, 2026, with prices from £2,437 to £3,500, a £1,063 spread on the same certified stone. Blue Nile lists it at £3,500. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.55
Carat
M
Colour
IF
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceStrong
Crown angle34.5°
Pavilion angle40.6°
OriginNatural
Grading LabGIA
CertificateGIA 6421872368
Dimensions7.38 × 7.43 × 4.52 mm
L/W Ratio1.01
Top View
7.38 mm7.43 mm1.55 ctM / IF
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceStrong
CertificateGIA 6421872368
Side View
Table 60.0%Crown 34.5°Girdle: - SPavilion 40.6°Culet: NoneDepth 61.0%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 6
Current: £3,500 GBP|Low: £2,437 GBP|High: £3,500 GBP|Avg: £3,128 GBP
Blue Nile
Retailer 2
Retailer 3
November 6, 2026
Retailer 2£2,437 GBP
Retailer 3£3,438 GBP
Blue Nile£3,500 GBP

43 data points across 3 retailers

3 retailers£2,437 GBP to £3,500 GBP

A
Cheapest Retailer
-
£2,437 GBP
B+
Retailer 2
-
£3,438 GBP
View
Most Expensive
B+
Blue Nile
14692894 · Nov 5
£3,500 GBP
$4,711 USD
View
2 more retailers have this diamond
Prices start from £2,437 GBPSave up to £1,063 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
1.55ct Round
£2,437 GBP