Round|Natural|GIA

1.70ct H SI2 Round Natural Diamond

EX • H/SI2 • GIA 1559478791

Certificate GIA 1559478791

Diamond specifications and retailer prices

From $4,999 USD
As of October 31, 2026
Save $5,503 USD (52%) vs most expensive(unlock to see where)
24 retailers carry this diamond
Most expensive: $12,114 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 H colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 1559478791. Listed at 24 retailers as of October 26, 2026, with a 110% 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
Color
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33°
Pavilion angle41.8°
OriginNatural
Grading LabGIA
CertificateGIA 1559478791
Dimensions7.68 × 4.72 × 4.72 mm
L/W Ratio1.63
Culet sizeNone
Top View
7.68 mm4.72 mm1.70 ctH / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1559478791
Side View
Table 59.0%Crown 33°Girdle: THN-STKPavilion 41.8°Culet: NoneDepth 61.3%

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: Oct 31
Current: $7,779 USD|Low: $4,774 USD|High: $10,502 USD|Avg: $6,901 USD|+4.2%
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
Retailer 15
Retailer 16
Retailer 17
October 30, 2026
Retailer 4$5,562 USD
Retailer 5$5,722 USD
Retailer 13$5,729 USD
Retailer 6$5,800 USD
Retailer 15$6,056 USD
Retailer 17$6,057 USD
Retailer 2$6,460 USD
Retailer 8$6,649 USD
Retailer 11$6,683 USD
Retailer 16$6,812 USD
Retailer 10$6,899 USD
Retailer 3$7,160 USD
Retailer 7$7,160 USD
Retailer 9$7,400 USD
Retailer 1$7,779 USD
Retailer 12$10,149 USD
Retailer 14$10,502 USD

35 data points across 17 retailers

24 retailers$4,999 USD to $10,502 USD

A
Cheapest Retailer
-
$4,999 USD
A
Retailer 2
-
$5,562 USD
View
A
Retailer 3
-
$5,722 USD
View
A
Retailer 4
-
$5,729 USD
View
A
Retailer 5
-
$5,800 USD
View
B+
Retailer 6
-
$6,056 USD
View
Final sale: no returns
B+
Retailer 7
-
$6,460 USD
View
Retailer 8
-
$6,562 USD
View
Price last confirmed 49 days ago
Retailer 9
-
$6,562 USD
View
Price last confirmed 32 days ago
Retailer 10
-
$6,649 USD
View
Price last confirmed 8 days ago
Retailer 11
-
$6,663 USD
View
Price last confirmed 31 days ago
B+
Retailer 12
-
$6,683 USD
View
B+
Retailer 13
-
$6,812 USD
View
B+
Retailer 14
-
$6,899 USD
£5,432 GBP
View
B+
Retailer 15
-
$7,160 USD
View
B+
Retailer 16
-
$7,160 USD
View
B+
Retailer 17
-
$7,400 USD
View
Retailer 18
-
$7,571 USD
View
Price last confirmed 31 days ago
Retailer 19
-
$7,571 USD
View
Price last confirmed 50 days ago
B+
Retailer 20
-
$7,779 USD
€7,409 EUR
View
B
Retailer 21
-
$10,149 USD
£7,991 GBP
View
B
Retailer 22
-
$10,502 USD
View
Retailer 23
-
$12,114 USD
View
Price last confirmed 50 days ago
Most Expensive
NZ Jewellers
24bb874d-fc3e-4e61-9f42-8d6bc48b80c1 · Sep 28
$12,114 USD
View
Price last confirmed 33 days ago
23 more retailers have this diamond
Prices start from $4,999 USDSave up to $5,503 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.

A
1.70ct Round
$4,999 USD