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Round|Lab Grown|IGI

1.70ct D SI1 Round Lab Grown Diamond

ID • D/SI1 • IGI LG561274026

Shape and cutting style on the report: Round brilliant

Certificate IGI LG561274026

Diamond specifications and retailer prices

From $270 USD
As of October 31, 2026
Save $900 USD (77%) vs most expensive(unlock to see where)
23 retailers carry this diamond
Most expensive: $1,170 USD at Brilliant Earth · As of October 31, 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 D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG561274026 or 561274026. Listed at 23 retailers as of October 31, 2026, with prices from $270 to $1,170, a $900 spread on the same certified stone. Brilliant Earth lists it at $1,170. 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
D
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.1°
Pavilion angle40.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG561274026
Dimensions7.64 × 7.61 × 4.73 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II
Top View
7.64 mm7.61 mm1.70 ctD / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG561274026
Side View
Table 56.5%Crown 35.1°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 62.1%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Oct 31
Current: $1,170 USD|Low: $187 USD|High: $1,200 USD|Avg: $601 USD|-2.5%
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
November 1, 2026
Retailer 5$234 USD
Retailer 12$270 USD
Retailer 4$287 USD
Retailer 11$410 USD
Retailer 7$487 USD
Retailer 3$546 USD
Retailer 6$548 USD
Retailer 13$550 USD
Retailer 8$603 USD
Retailer 9$930 USD
Retailer 10$938 USD
Retailer 2$1,165 USD
Brilliant Earth$1,170 USD

42 data points across 13 retailers

23 retailers$270 USD to $1,170 USD

Retailer 1
-
$234 USD
Price last confirmed 33 days ago
Retailer 2
-
$234 USD
View
Price last confirmed 21 days ago
A
Retailer 3
-
$270 USD
View
Final sale: no returns
Retailer 4
-
$272 USD
View
Price last confirmed 40 days ago
Retailer 5
-
$272 USD
View
Price last confirmed 26 days ago
Retailer 6
-
$287 USD
View
Price last confirmed 33 days ago
Retailer 7
-
$291 USD
View
Price last confirmed 22 days ago
Retailer 8
-
$291 USD
View
Price last confirmed 29 days ago
A
Retailer 9
-
$291 USD
View
A
Retailer 10
-
$346 USD
HK$2,700 HKD
View
B+
Retailer 11
-
$410 USD
View
A
Retailer 12
-
$487 USD
€464 EUR
View
A
Retailer 13
-
$546 USD
View
A
Retailer 14
-
$548 USD
£431 GBP
View
A
Retailer 15
-
$550 USD
View
B+
Retailer 16
-
$603 USD
A$928 AUD
View
Retailer 17
-
$930 USD
View
Price last confirmed 7 days ago
Retailer 18
-
$934 USD
View
Price last confirmed 31 days ago
Retailer 19
-
$934 USD
View
Price last confirmed 22 days ago
B
Retailer 20
-
$938 USD
View
B
Retailer 21
-
$989 USD
SGD 1,336 SGD
View
B
Retailer 22
-
$1,165 USD
£917 GBP
View
Most Expensive
B
Brilliant Earth
6686840A · Oct 31
$1,170 USD
View
22 more retailers have this diamond
Prices start from $270 USDSave up to $900 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
$270 USD