Round|Natural|GIA

1.70ct H SI2 Round Natural Diamond

EX • H/SI2 • GIA 5231694188

Certificate GIA 5231694188

Diamond specifications and retailer prices

From £4,509 GBP
A$9,295 AUD
As of October 31, 2026
Save £3,580 GBP (44%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: £9,708 GBP at NZ Jewellers · As of September 28, 2026
View at NZ Jewellers

About this 1.7ct natural round diamond

This 1.7ct natural round sits in the one-and-a-half to two carat band, graded H colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 5231694188. Listed at 17 retailers as of October 31, 2026, with a 79% 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

1.70
Carat
H
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 5231694188
Dimensions7.59 × 7.49 × 4.76 mm
L/W Ratio1.01
Top View
7.59 mm7.49 mm1.70 ctH / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 5231694188
Side View
Table 56.0%CrownGirdle: MED-STKPavilionCulet: NoneDepth 63.5%

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 31
Current: £7,010 GBP|Low: £4,381 GBP|High: £8,186 GBP|Avg: £6,299 GBP|-0.9%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
November 1, 2026
Retailer 6£4,381 GBP
Retailer 4£4,509 GBP
Retailer 3£5,435 GBP
Retailer 5£5,991 GBP
Retailer 1£7,010 GBP
Retailer 2£8,089 GBP

42 data points across 6 retailers

17 retailers£4,509 GBP to £8,089 GBP

Retailer 1
-
£4,381 GBP
$5,870 USD
Price last confirmed 7 days ago
A
Retailer 2
-
£4,509 GBP
A$9,295 AUD
View
A
Retailer 3
-
£4,585 GBP
$6,144 USD
View
B+
Retailer 4
-
£5,007 GBP
$6,709 USD
View
B+
Retailer 5
-
£5,169 GBP
$6,926 USD
View
Retailer 6
-
£5,259 GBP
$7,046 USD
View
Price last confirmed 31 days ago
Retailer 7
-
£5,339 GBP
$7,154 USD
View
Price last confirmed 32 days ago
B+
Retailer 8
-
£5,435 GBP
View
B+
Retailer 9
-
£5,821 GBP
$7,800 USD
View
B+
Retailer 10
-
£5,821 GBP
$7,800 USD
View
B+
Retailer 11
-
£5,991 GBP
€7,645 EUR
View
B
Retailer 12
-
£6,015 GBP
$8,060 USD
View
Retailer 13
-
£6,068 GBP
$8,130 USD
View
Price last confirmed 32 days ago
Retailer 14
-
£6,395 GBP
$8,568 USD
View
Price last confirmed 9 days ago
B
Retailer 15
-
£7,010 GBP
View
B
Retailer 16
-
£8,089 GBP
View
Most Expensive
NZ Jewellers
80a30488-a9a7-4d61-92d4-4b97b52abb19 · Sep 28
£9,708 GBP
$13,008 USD
View
Price last confirmed 34 days ago
16 more retailers have this diamond
Prices start from £4,509 GBPSave up to £3,580 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
1.70ct Round
£4,509 GBP