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Round|Lab Grown|IGI

1.70ct H SI2 Round Lab Grown Diamond

EX • H/SI2 • IGI LG407945444

Shape and cutting style on the report: Round brilliant

Certificate IGI LG407945444

Diamond specifications and retailer prices

From $1,270 USD
As of October 29, 2026
Save $3,693 USD (74%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $4,963 USD at MOH London · As of October 29, 2026
View at MOH London

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 H colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG407945444 or 407945444. Listed at 11 retailers as of October 29, 2026, with prices from $1,270 to $4,963, a $3,693 spread on the same certified stone. MOH London lists it at $4,963. 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 angle34.3°
Pavilion angle40.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG407945444
Dimensions7.67 × 7.63 × 4.79 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory grown diamond was created by chemical vapor deposition process (CVD) Type IIa
Top View
7.67 mm7.63 mm1.70 ctH / SI2
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG407945444
Side View
Table 54.0%Crown 34.3°Girdle: MediumPavilion 40.9°Culet: NoneDepth 62.6%

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 29
Current: $4,963 USD|Low: $1,116 USD|High: $5,004 USD|Avg: $2,295 USD|-0.5%
MOH London
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
October 29, 2026
Retailer 5$1,116 USD
Retailer 9$1,270 USD
Retailer 8$1,490 USD
Retailer 12$1,621 USD
Retailer 14$1,669 USD
Retailer 10$1,729 USD
Retailer 15$1,729 USD
Retailer 6$1,902 USD
Retailer 2$2,121 USD
Retailer 4$2,349 USD
Retailer 11$2,724 USD
Retailer 3$3,137 USD
Retailer 13$3,240 USD
Retailer 7$3,869 USD
MOH London$4,963 USD

21 data points across 15 retailers

11 retailers$1,270 USD to $4,963 USD

A
Cheapest Retailer
-
$1,270 USD
B+
Retailer 2
-
$1,490 USD
View
B+
Retailer 3
-
$1,621 USD
View
B+
Retailer 4
-
$1,669 USD
View
Final sale: no returns
B+
Retailer 5
-
$1,729 USD
View
Retailer 6
-
$1,729 USD
View
Price last confirmed 17 days ago
B
Retailer 7
-
$2,121 USD
£1,670 GBP
View
B
Retailer 8
-
$2,724 USD
View
B
Retailer 9
-
$3,137 USD
View
B
Retailer 10
-
$3,240 USD
View
Most Expensive
B
MOH London
LG407945444 · Oct 29
$4,963 USD
£3,908 GBP
View
10 more retailers have this diamond
Prices start from $1,270 USDSave up to $3,693 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
$1,270 USD