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Round|Natural|GIA

1.61ct M SI1 Round Natural Diamond

EX • M/SI1 • GIA 7446345645

Certificate GIA 7446345645

Diamond specifications and retailer prices

From £1,719 GBP
As of November 5, 2026
Save £664 GBP (28%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: £4,014 GBP at NZ Jewellers · As of October 30, 2026
View at NZ Jewellers

About this 1.61ct natural round diamond

This 1.61ct 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 7446345645. Listed at 11 retailers as of November 5, 2026, with a 39% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

1.61
Carat
M
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle31.5°
Pavilion angle41.8°
OriginNatural
Grading LabGIA
CertificateGIA 7446345645
Dimensions7.53 × 7.58 × 4.68 mm
L/W Ratio1.01
Star length50%
Top View
7.53 mm7.58 mm1.61 ctM / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 7446345645
Side View
Table 55.0%Crown 31.5°Girdle: THN-STKPavilion 41.8°Culet: NoneDepth 61.9%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 5
Current: £4,014 GBP|Low: £1,320 GBP|High: £4,014 GBP|Avg: £2,254 GBP
NZ Jewellers
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
November 5, 2026
Retailer 7£1,320 GBP
Retailer 3£1,719 GBP
Retailer 10£1,808 GBP
Retailer 6£1,898 GBP
Retailer 11£1,920 GBP
Retailer 13£1,920 GBP
Retailer 9£2,008 GBP
Retailer 14£2,024 GBP
Retailer 4£2,056 GBP
Retailer 12£2,215 GBP
Retailer 8£2,343 GBP
Retailer 2£2,384 GBP
Retailer 15£3,101 GBP
Retailer 5£3,193 GBP
NZ Jewellers£4,014 GBP

23 data points across 15 retailers

11 retailers£1,719 GBP to £2,384 GBP

A
Cheapest Retailer
-
£1,719 GBP
A
Retailer 2
-
£1,808 GBP
View
A
Retailer 3
-
£1,898 GBP
View
A
Retailer 4
-
£1,920 GBP
View
Retailer 5
-
£1,920 GBP
View
Price last confirmed 8 days ago
Retailer 6
-
£2,008 GBP
View
Price last confirmed 8 days ago
B+
Retailer 7
-
£2,024 GBP
View
B+
Retailer 8
-
£2,215 GBP
View
B+
Retailer 9
-
£2,343 GBP
View
B+
Retailer 10
-
£2,384 GBP
View
Most Expensive
NZ Jewellers
9c9f791e-6835-4d1a-8c0d-335efdd8c901 · Oct 30
£4,014 GBP
$5,402 USD
View
Price last confirmed 7 days ago
10 more retailers have this diamond
Prices start from £1,719 GBPSave up to £664 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
1.61ct Round
£1,719 GBP