Round|Natural|GIA

1.70ct J SI1 Round Natural Diamond

EX • J/SI1 • GIA 2556660747

Certificate GIA 2556660747

Diamond specifications and retailer prices

From $4,928 USD
HK$38,500 HKD
As of November 1, 2026
Save $4,742 USD (49%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: $10,977 USD 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 J colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 2556660747. Listed at 20 retailers as of November 1, 2026, with a 96% 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
J
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.5°
Pavilion angle41.6°
OriginNatural
Grading LabGIA
CertificateGIA 2556660747
Dimensions7.58 × 7.63 × 4.78 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Crystal, Cloud, Feather, Needle
Top View
7.58 mm7.63 mm1.70 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2556660747
Side View
Table 58.0%Crown 34.5°Girdle: MED-STKPavilion 41.6°Culet: NoneDepth 62.8%

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: Nov 1
Current: $5,209 USD|Low: $4,928 USD|High: $9,785 USD|Avg: $6,830 USD|-1.4%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 1, 2026
Retailer 6$4,928 USD
Retailer 1$5,209 USD
Retailer 9$5,762 USD
Retailer 10$6,058 USD
Retailer 4$6,253 USD
Retailer 2$6,403 USD
Retailer 7$7,173 USD
Retailer 8$7,596 USD
Retailer 5$8,064 USD
Retailer 3$9,670 USD

30 data points across 10 retailers

20 retailers$4,928 USD to $9,670 USD

B+
Cheapest Retailer
-
$4,928 USD
HK$38,500 HKD
B+
Retailer 2
-
$5,209 USD
₹496,078 INR
View
Retailer 3
-
$5,616 USD
SGD 7,589 SGD
View
Price last confirmed 18 days ago
B+
Retailer 4
-
$5,762 USD
SGD 7,786 SGD
View
B
Retailer 5
-
$5,991 USD
View
B
Retailer 6
-
$5,995 USD
View
B
Retailer 7
-
$6,058 USD
View
Final sale: no returns
Retailer 8
-
$6,058 USD
View
Price last confirmed 16 days ago
B+
Retailer 9
-
$6,253 USD
£4,924 GBP
View
Retailer 10
-
$6,403 USD
A$9,850 AUD
View
Price last confirmed 22 days ago
B
Retailer 11
-
$6,530 USD
View
Retailer 12
-
$6,563 USD
View
Price last confirmed 33 days ago
Retailer 13
-
$6,563 USD
View
Price last confirmed 12 days ago
Retailer 14
-
$6,664 USD
View
Price last confirmed 32 days ago
B
Retailer 15
-
$6,722 USD
View
B
Retailer 16
-
$7,173 USD
€6,831 EUR
View
Retailer 17
-
$7,573 USD
View
Price last confirmed 32 days ago
B
Retailer 18
-
$8,064 USD
ZAR 130,269 ZAR
View
B
Retailer 19
-
$9,670 USD
£7,614 GBP
View
Most Expensive
NZ Jewellers
2294e6e0-2c75-4730-957e-fbbe77e5e584 · Sep 28
$10,977 USD
View
Price last confirmed 34 days ago
19 more retailers have this diamond
Prices start from $4,928 USDSave up to $4,742 USD

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+
1.70ct Round
$4,928 USD