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Round|Natural|GIA

1.60ct H SI1 Round Natural Diamond

EX • H/SI1 • GIA 2136475204

Certificate GIA 2136475204

Diamond specifications and retailer prices

From £5,468 GBP
$7,327 USD
As of October 30, 2026
Save £7,271 GBP (57%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: £12,739 GBP at Diamond Quarter · As of October 31, 2026
View at Diamond Quarter

About this 1.6ct natural round diamond

This 1.6ct 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 2136475204. Listed at 19 retailers as of October 30, 2026, with prices from £5,468 to £12,739, a £7,271 spread on the same certified stone. Diamond Quarter lists it at £12,739. 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
H
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle34°
Pavilion angle41.4°
OriginNatural
Grading LabGIA
CertificateGIA 2136475204
Dimensions7.54 × 7.53 × 4.57 mm
L/W Ratio1.00
Star length50%
Lower girdle80%
Girdle conditionFaceted
Culet sizeNone
Top View
7.54 mm7.53 mm1.60 ctH / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 2136475204
Side View
Table 62.0%Crown 34°Girdle: MED-STKPavilion 41.4°Culet: NoneDepth 60.7%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: £6,841 GBP|Low: £5,468 GBP|High: £10,402 GBP|Avg: £7,481 GBP|+0.7%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
October 31, 2026
Retailer 7£5,468 GBP
Retailer 6£6,815 GBP
Retailer 1£6,841 GBP
Retailer 4£6,846 GBP
Retailer 8£7,299 GBP
Retailer 9£7,299 GBP
Retailer 10£7,545 GBP
Retailer 3£7,688 GBP
Retailer 2£8,119 GBP
Retailer 5£10,332 GBP

43 data points across 10 retailers

19 retailers£5,468 GBP to £12,739 GBP

B+
Cheapest Retailer
-
£5,468 GBP
$7,327 USD
B+
Retailer 2
-
£5,593 GBP
$7,494 USD
View
B+
Retailer 3
-
£5,762 GBP
A$11,879 AUD
View
B+
Retailer 4
-
£5,941 GBP
$7,961 USD
View
B
Retailer 5
-
£6,013 GBP
CA$11,190 CAD
View
Retailer 6
-
£6,815 GBP
A$14,049 AUD
View
Price last confirmed 8 days ago
B+
Retailer 7
-
£6,841 GBP
View
B
Retailer 8
-
£6,846 GBP
$9,173 USD
View
Retailer 9
-
£6,846 GBP
$9,173 USD
View
Price last confirmed 22 days ago
Retailer 10
-
£6,846 GBP
$9,173 USD
View
Price last confirmed 10 days ago
B
Retailer 11
-
£7,090 GBP
$9,500 USD
View
B
Retailer 12
-
£7,299 GBP
$9,780 USD
View
B
Retailer 13
-
£7,299 GBP
$9,780 USD
View
B
Retailer 14
-
£7,307 GBP
$9,790 USD
View
B
Retailer 15
-
£7,545 GBP
$10,110 USD
View
B
Retailer 16
-
£7,688 GBP
€9,810 EUR
View
B
Retailer 17
-
£7,873 GBP
$10,549 USD
View
B
Retailer 18
-
£10,332 GBP
View
Most Expensive
B
Diamond Quarter
1.6SI1H21043E43N · Oct 31
£12,739 GBP
View
18 more retailers have this diamond
Prices start from £5,468 GBPSave up to £7,271 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+
1.60ct Round
£5,468 GBP