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1.64ct M SI1 Round Natural Diamond

EX • M/SI1 • GIA 7243915716

Certificate GIA 7243915716

Diamond specifications and retailer prices

From £2,528 GBP
As of November 4, 2026
Save £527 GBP (17%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: £3,054 GBP at Yorxs · As of November 6, 2026
View at Yorxs

About this 1.64ct natural round diamond

This 1.64ct natural round sits in the one-and-a-half to two carat band, graded M colour (faint-tinted) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 7243915716. Listed at 2 retailers as of November 4, 2026, with prices from £2,528 to £3,054, a £527 spread on the same certified stone. Yorxs lists it at £3,054. 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

1.64
Carat
M
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 7243915716
Dimensions7.60 × 7.61 × 4.62 mm
L/W Ratio1.00
Star length50%
Girdle conditionFaceted
Culet sizeNone
Top View
7.60 mm7.61 mm1.64 ctM / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 7243915716
Side View
Table 59.0%Crown 34°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 60.7%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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Price History

Last verified: Nov 4
Current: £2,528 GBP|Low: £2,528 GBP|High: £3,071 GBP|Avg: £2,784 GBP
Retailer 1
Yorxs
November 6, 2026
Retailer 1£2,528 GBP
Yorxs£3,054 GBP

14 data points across 2 retailers

2 retailers£2,528 GBP to £3,054 GBP

B+
Cheapest Retailer
-
£2,528 GBP
Most Expensive
B
Yorxs
P6702 · Nov 6
£3,054 GBP
€3,915 EUR
View
1 more retailer has this diamond
Prices start from £2,528 GBPSave up to £527 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+
1.64ct Round
£2,528 GBP