CaratHunter
Plans
Round|Lab Grown|IGI

1.70ct F SI1 Round Lab Grown Diamond

ID • F/SI1 • IGI LG737547741

Shape and cutting style on the report: Round brilliant

Certificate IGI LG737547741

Diamond specifications and retailer prices

From $208 USD
As of November 1, 2026
Save $1,122 USD (84%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: $1,330 USD at Brilliant Earth · As of November 1, 2026
View at Brilliant Earth

About this 1.7ct lab-grown round diamond

This 1.7ct lab-grown round sits in the one-and-a-half to two carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG737547741 or 737547741. Listed at 17 retailers as of November 1, 2026, with prices from $208 to $1,330, a $1,122 spread on the same certified stone. Brilliant Earth lists it at $1,330. 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
F
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishVery Good
SymmetryExcellent
FluorescenceNone
Crown angle33.2°
Pavilion angle40.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG737547741
Dimensions7.70 × 7.72 × 4.62 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
7.70 mm7.72 mm1.70 ctF / SI1
OriginLab Grown
CutIdeal
PolishVery Good
SymmetryExcellent
FluorescenceNone
CertificateIGI LG737547741
Side View
Table 60.0%Crown 33.2°Girdle: MED-STKPavilion 40.7°Culet: NoneDepth 60.0%

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: $1,330 USD|Low: $202 USD|High: $1,690 USD|Avg: $568 USD|-21.3%
Brilliant Earth
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
November 1, 2026
Retailer 7$208 USD
Retailer 4$232 USD
Retailer 13$241 USD
Retailer 3$257 USD
Retailer 12$257 USD
Retailer 9$294 USD
Retailer 6$348 USD
Retailer 10$473 USD
Retailer 15$520 USD
Retailer 16$521 USD
Retailer 11$542 USD
Retailer 17$827 USD
Retailer 8$830 USD
Retailer 14$830 USD
Retailer 5$881 USD
Retailer 2$1,031 USD
Brilliant Earth$1,330 USD

45 data points across 17 retailers

17 retailers$208 USD to $1,330 USD

A
Cheapest Retailer
-
$208 USD
A
Retailer 2
-
$232 USD
View
Final sale: no returns
A
Retailer 3
-
$241 USD
View
Retailer 4
-
$257 USD
View
Price last confirmed 7 days ago
A
Retailer 5
-
$257 USD
View
A
Retailer 6
-
$294 USD
HK$2,300 HKD
View
B+
Retailer 7
-
$348 USD
View
A
Retailer 8
-
$473 USD
£373 GBP
View
A
Retailer 9
-
$520 USD
View
A
Retailer 10
-
$521 USD
View
A
Retailer 11
-
$542 USD
€516 EUR
View
B
Retailer 12
-
$827 USD
View
Retailer 13
-
$830 USD
View
Price last confirmed 14 days ago
B
Retailer 14
-
$830 USD
View
B+
Retailer 15
-
$881 USD
View
B
Retailer 16
-
$1,031 USD
£812 GBP
View
Most Expensive
B
Brilliant Earth
16145445A · Nov 1
$1,330 USD
View
16 more retailers have this diamond
Prices start from $208 USDSave up to $1,122 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
$208 USD