Radiant|Natural|GIA

1.70ct H SI1 Radiant Natural Diamond

VG • H/SI1 • GIA 6552439955

Certificate GIA 6552439955

Diamond specifications and retailer prices

From £4,261 GBP
HK$44,600 HKD
As of November 1, 2026
Save £4,654 GBP (52%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: £9,631 GBP at NZ Jewellers · As of October 11, 2026
View at NZ Jewellers

About this 1.7ct natural radiant diamond

This 1.7ct natural radiant sits in the one-and-a-half to two carat band, graded H colour (near-colourless) and SI1 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 6552439955. Listed at 21 retailers as of October 28, 2026, with a 109% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.70
Carat
H
Colour
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6552439955
Dimensions8.70 × 5.92 × 3.98 mm
L/W Ratio1.47
Girdle conditionPolished
Culet sizeNone
Key to symbols
Crystal, Feather, Cavity, Needle
Top View
8.70 mm5.92 mm1.70 ctH / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 6552439955
Side View
Table 71.0%CrownGirdle: ThickPavilionCulet: NoneDepth 67.3%

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: Nov 1
Current: £6,197 GBP|Low: £4,261 GBP|High: £8,952 GBP|Avg: £5,878 GBP|-1.3%
Retailer 1
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
November 2, 2026
Retailer 13£4,261 GBP
Retailer 8£4,510 GBP
Retailer 3£4,672 GBP
Retailer 6£4,930 GBP
Retailer 5£5,084 GBP
Retailer 12£5,235 GBP
Retailer 14£5,239 GBP
Retailer 7£5,348 GBP
Retailer 4£5,552 GBP
Retailer 9£5,794 GBP
Retailer 1£6,197 GBP
Retailer 11£6,969 GBP
Retailer 10£7,905 GBP
Retailer 2£8,914 GBP

28 data points across 14 retailers

21 retailers£4,261 GBP to £8,914 GBP

A
Cheapest Retailer
-
£4,261 GBP
HK$44,600 HKD
A
Retailer 2
-
£4,510 GBP
₹575,466 INR
View
B+
Retailer 3
-
£4,672 GBP
$6,260 USD
View
Retailer 4
-
£4,930 GBP
SGD 8,927 SGD
View
Price last confirmed 22 days ago
B+
Retailer 5
-
£5,084 GBP
SGD 9,206 SGD
View
B+
Retailer 6
-
£5,235 GBP
$7,014 USD
View
Final sale: no returns
B+
Retailer 7
-
£5,239 GBP
$7,020 USD
View
B+
Retailer 8
-
£5,239 GBP
$7,020 USD
View
Retailer 9
-
£5,315 GBP
$7,122 USD
View
Price last confirmed 21 days ago
B+
Retailer 10
-
£5,348 GBP
View
Retailer 11
-
£5,552 GBP
A$11,445 AUD
View
Price last confirmed 11 days ago
Retailer 12
-
£5,759 GBP
$7,716 USD
View
Price last confirmed 23 days ago
B
Retailer 13
-
£5,794 GBP
$7,763 USD
View
B
Retailer 14
-
£5,854 GBP
A$12,068 AUD
View
Retailer 15
-
£5,876 GBP
$7,873 USD
View
Price last confirmed 32 days ago
B
Retailer 16
-
£6,197 GBP
€7,908 EUR
View
Retailer 17
-
£6,645 GBP
$8,903 USD
View
Price last confirmed 21 days ago
B
Retailer 18
-
£6,969 GBP
ZAR 150,845 ZAR
View
B
Retailer 19
-
£7,905 GBP
View
B
Retailer 20
-
£8,914 GBP
View
Most Expensive
NZ Jewellers
176dd8fe-35a0-48ac-85a6-fe3bab77145e · Oct 11
£9,631 GBP
$12,905 USD
View
Price last confirmed 21 days ago
20 more retailers have this diamond
Prices start from £4,261 GBPSave up to £4,654 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 Radiant
£4,261 GBP