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Radiant|Natural|GIA

1.70ct I SI1 Radiant Natural Diamond

VG • I/SI1 • GIA 1559192012

Certificate GIA 1559192012

Diamond specifications and retailer prices

From £3,433 GBP
As of November 6, 2026
Save £3,358 GBP (49%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: £7,926 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 I 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 1559192012. Listed at 20 retailers as of November 1, 2026, with a 98% 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
I
Colour
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1559192012
Dimensions7.92 × 6.10 × 4.25 mm
L/W Ratio1.30
Girdle conditionPolished
Culet sizeNone
Key to symbols
Crystal, Cloud, Feather, Indented Natural, Needle, Extra Facet
Top View
7.92 mm6.10 mm1.70 ctI / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 1559192012
Side View
Table 71.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth 69.7%

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 6
Current: £4,353 GBP|Low: £3,423 GBP|High: £7,086 GBP|Avg: £4,609 GBP|-5.3%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 7, 2026
Retailer 9£3,433 GBP
Retailer 5£3,626 GBP
Retailer 2£3,942 GBP
Retailer 3£4,046 GBP
Retailer 8£4,205 GBP
Retailer 11£4,231 GBP
Retailer 1£4,353 GBP
Retailer 10£4,700 GBP
Retailer 4£4,710 GBP
Retailer 6£4,979 GBP
Retailer 7£5,592 GBP
Retailer 12£6,790 GBP

29 data points across 12 retailers

20 retailers£3,433 GBP to £6,790 GBP

A
Cheapest Retailer
-
£3,433 GBP
A
Retailer 2
-
£3,626 GBP
View
Retailer 3
-
£3,942 GBP
View
Price last confirmed 11 days ago
B+
Retailer 4
-
£4,046 GBP
View
A
Retailer 5
-
£4,205 GBP
View
A
Retailer 6
-
£4,231 GBP
View
Final sale: no returns
B+
Retailer 7
-
£4,350 GBP
View
B+
Retailer 8
-
£4,352 GBP
View
A
Retailer 9
-
£4,353 GBP
View
B+
Retailer 10
-
£4,685 GBP
View
B+
Retailer 11
-
£4,700 GBP
View
Retailer 12
-
£4,710 GBP
View
Price last confirmed 28 days ago
Retailer 13
-
£4,739 GBP
View
Price last confirmed 26 days ago
Retailer 14
-
£4,739 GBP
View
Price last confirmed 28 days ago
Retailer 15
-
£4,765 GBP
View
Price last confirmed 38 days ago
B+
Retailer 16
-
£4,979 GBP
View
Retailer 17
-
£5,468 GBP
View
Price last confirmed 26 days ago
B+
Retailer 18
-
£5,592 GBP
View
B
Retailer 19
-
£6,790 GBP
View
Most Expensive
NZ Jewellers
46cc14e8-b203-4d3a-873b-62a06dc8972d · Oct 11
£7,926 GBP
$10,609 USD
View
Price last confirmed 26 days ago
19 more retailers have this diamond
Prices start from £3,433 GBPSave up to £3,358 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
£3,433 GBP