Oval|Natural|GIA

1.70ct E SI1 Oval Natural Diamond

EX • E/SI1 • GIA 1558250123

Certificate GIA 1558250123

Diamond specifications and retailer prices

From $8,909 USD
HK$69,600 HKD
As of November 1, 2026
Save $8,233 USD (48%) vs most expensive(unlock to see where)
25 retailers carry this diamond
Most expensive: $17,142 USD at With Clarity · As of October 30, 2026
View at With Clarity

About this 1.7ct natural oval diamond

This 1.7ct natural oval sits in the one-and-a-half to two carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 1558250123. Listed at 25 retailers as of October 30, 2026, with prices from $8,909 to $17,142, a $8,233 spread on the same certified stone. With Clarity lists it at $17,142. 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
E
Color
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle43.08°
Pavilion angle34.97°
OriginNatural
Grading LabGIA
CertificateGIA 1558250123
Dimensions9.09 × 6.48 × 4.10 mm
L/W Ratio1.40
Key to symbols
Crystal, Feather, Cloud, Pinpoint
Top View
9.09 mm6.48 mm1.70 ctE / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1558250123
Side View
Table 63.0%Crown 43.08°Girdle: THK-VTKPavilion 34.97°Culet: NoneDepth 63.3%

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: $9,143 USD|Low: $9,122 USD|High: $15,400 USD|Avg: $11,501 USD|-1.3%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 1, 2026
Retailer 1$9,143 USD
Retailer 9$9,858 USD
Retailer 6$10,244 USD
Retailer 11$10,354 USD
Retailer 5$10,669 USD
Retailer 2$10,754 USD
Retailer 3$10,826 USD
Retailer 8$12,277 USD
Retailer 10$13,421 USD
Retailer 7$14,314 USD
Retailer 4$15,216 USD

31 data points across 11 retailers

25 retailers$8,909 USD to $17,142 USD

A
Cheapest Retailer
-
$8,909 USD
HK$69,600 HKD
A
Retailer 2
-
$9,143 USD
₹870,796 INR
View
Retailer 3
-
$9,858 USD
SGD 13,321 SGD
View
Price last confirmed 20 days ago
B+
Retailer 4
-
$9,858 USD
View
B+
Retailer 5
-
$9,978 USD
View
B+
Retailer 6
-
$10,220 USD
View
B+
Retailer 7
-
$10,244 USD
View
B+
Retailer 8
-
$10,354 USD
SGD 13,992 SGD
View
B+
Retailer 9
-
$10,620 USD
View
B+
Retailer 10
-
$10,669 USD
£8,401 GBP
View
B+
Retailer 11
-
$10,754 USD
View
Final sale: no returns
B+
Retailer 12
-
$10,754 USD
View
Retailer 13
-
$10,826 USD
A$16,655 AUD
View
Price last confirmed 28 days ago
B+
Retailer 14
-
$11,618 USD
View
B+
Retailer 15
-
$11,651 USD
View
B+
Retailer 16
-
$11,830 USD
View
B+
Retailer 17
-
$11,922 USD
View
B+
Retailer 18
-
$11,926 USD
View
B+
Retailer 19
-
$12,248 USD
View
B+
Retailer 20
-
$12,277 USD
€11,692 EUR
View
B
Retailer 21
-
$13,443 USD
View
B
Retailer 22
-
$14,314 USD
ZAR 231,236 ZAR
View
B
Retailer 23
-
$15,216 USD
£11,981 GBP
View
B
Retailer 24
-
$16,238 USD
View
Most Expensive
B
With Clarity
1558250123 · Oct 30
$17,142 USD
View
24 more retailers have this diamond
Prices start from $8,909 USDSave up to $8,233 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 Oval
$8,909 USD