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Round|Natural|IGI

1.60ct D SI2 Round Natural Diamond

EX • D/SI2 • IGI 670408693

Shape and cutting style on the report: Round brilliant

Certificate IGI 670408693

Diamond specifications and retailer prices

From £5,164 GBP
$6,919 USD
As of October 30, 2026
Save £3,207 GBP (38%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: £10,876 GBP at NZ Jewellers · As of September 28, 2026
View at NZ Jewellers

About this 1.6ct natural round diamond

This 1.6ct natural round sits in the one-and-a-half to two carat band, graded D colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by IGI 670408693. Listed at 12 retailers as of October 29, 2026, with a 62% 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

1.60
Carat
D
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceFaint
Crown angle33.8°
Pavilion angle40.7°
OriginNatural
Grading LabIGI
CertificateIGI 670408693
Dimensions7.62 × 7.66 × 4.52 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Top View
7.62 mm7.66 mm1.60 ctD / SI2
OriginNatural
CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceFaint
CertificateIGI 670408693
Side View
Table 60.0%Crown 33.8°Girdle: THN-MEDPavilion 40.7°Culet: NoneDepth 59.2%

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 30
Current: £6,529 GBP|Low: £4,663 GBP|High: £9,172 GBP|Avg: £6,816 GBP|-4.5%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
October 30, 2026
Retailer 8£4,663 GBP
Retailer 5£5,164 GBP
Retailer 4£6,100 GBP
Retailer 2£6,164 GBP
Retailer 1£6,529 GBP
Retailer 6£7,752 GBP
Retailer 7£7,987 GBP
Retailer 3£8,371 GBP

32 data points across 8 retailers

12 retailers£5,164 GBP to £8,371 GBP

A
Cheapest Retailer
-
£5,164 GBP
$6,919 USD
B+
Retailer 2
-
£6,100 GBP
$8,173 USD
View
B+
Retailer 3
-
£6,164 GBP
View
Retailer 4
-
£6,503 GBP
$8,713 USD
View
Price last confirmed 47 days ago
Retailer 5
-
£6,503 GBP
$8,713 USD
View
Price last confirmed 29 days ago
B+
Retailer 6
-
£6,529 GBP
€8,331 EUR
View
Retailer 7
-
£6,603 GBP
$8,847 USD
View
Price last confirmed 31 days ago
Retailer 8
-
£7,504 GBP
$10,054 USD
View
Price last confirmed 46 days ago
Retailer 9
-
£7,504 GBP
$10,054 USD
View
Price last confirmed 31 days ago
B
Retailer 10
-
£8,371 GBP
View
Retailer 11
-
£10,876 GBP
$14,573 USD
View
Price last confirmed 45 days ago
Most Expensive
NZ Jewellers
0489f0d7-1261-4fdd-b7ae-c25e8d768b7a · Sep 28
£10,876 GBP
$14,573 USD
View
Price last confirmed 33 days ago
11 more retailers have this diamond
Prices start from £5,164 GBPSave up to £3,207 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
1.60ct Round
£5,164 GBP